8429536440 has 192 divisors, whose sum is σ = 29860215840. Its totient is φ = 2049868800.

The previous prime is 8429536439. The next prime is 8429536463. The reversal of 8429536440 is 446359248.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 377590 + ... + 399290.

Almost surely, 2^8429536440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8429536440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14930107920).

8429536440 is an abundant number, since it is smaller than the sum of its proper divisors (21430679400).

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

8429536440 is a wasteful number, since it uses less digits than its factorization.

8429536440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21814 (or 21807 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The square root of 8429536440 is about 91812.5069911502. The cubic root of 8429536440 is about 2035.1725240947.

The spelling of 8429536440 in words is "eight billion, four hundred twenty-nine million, five hundred thirty-six thousand, four hundred forty".