423440977848 has 256 divisors, whose sum is σ = 1250429322240. Its totient is φ = 116981760000.

The previous prime is 423440977847. The next prime is 423440977849. The reversal of 423440977848 is 848779044324.

It is an interprime number because it is at equal distance from previous prime (423440977847) and next prime (423440977849).

It is a super-2 number, since 2×423440977848² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 423440977791 and 423440977800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423440977847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 444323740 + ... + 444324692.

It is an arithmetic number, because the mean of its divisors is an integer number (4884489540).

Almost surely, 2^423440977848 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 423440977848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (625214661120).

423440977848 is an abundant number, since it is smaller than the sum of its proper divisors (826988344392).

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

423440977848 is a wasteful number, since it uses less digits than its factorization.

423440977848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1518 (or 1514 counting only the distinct ones).

The product of its (nonzero) digits is 43352064, while the sum is 60.

The spelling of 423440977848 in words is "four hundred twenty-three billion, four hundred forty million, nine hundred seventy-seven thousand, eight hundred forty-eight".