8921436480 has 252 divisors, whose sum is σ = 33730583796. Its totient is φ = 2162688000.

The previous prime is 8921436473. The next prime is 8921436487. The reversal of 8921436480 is 846341298.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (8921436473) and next prime (8921436487).

It can be written as a sum of positive squares in 2 ways, for example, as 7092334656 + 1829101824 = 84216^2 + 42768^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8921436487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 335680 + ... + 361280.

It is an arithmetic number, because the mean of its divisors is an integer number (133851523).

Almost surely, 2^8921436480 is an apocalyptic number.

8921436480 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8921436480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16865291898).

8921436480 is an abundant number, since it is smaller than the sum of its proper divisors (24809147316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8921436480 is a wasteful number, since it uses less digits than its factorization.

8921436480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25646 (or 25622 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 8921436480 is about 94453.3561076577. The cubic root of 8921436480 is about 2074.0135809857.

The spelling of 8921436480 in words is "eight billion, nine hundred twenty-one million, four hundred thirty-six thousand, four hundred eighty".