40404462440 has 64 divisors (see below), whose sum is σ = 91259688960. Its totient is φ = 16099741440.

The previous prime is 40404462433. The next prime is 40404462443. The reversal of 40404462440 is 4426440404.

It is a junction number, because it is equal to n+sod(n) for n = 40404462397 and 40404462406.

It is not an unprimeable number, because it can be changed into a prime (40404462443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24832907 + ... + 24834533.

It is an arithmetic number, because the mean of its divisors is an integer number (1425932640).

Almost surely, 2^40404462440 is an apocalyptic number.

40404462440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40404462440 is an abundant number, since it is smaller than the sum of its proper divisors (50855226520).

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

40404462440 is a wasteful number, since it uses less digits than its factorization.

40404462440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3642 (or 3638 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 32.

The spelling of 40404462440 in words is "forty billion, four hundred four million, four hundred sixty-two thousand, four hundred forty".