40816404 has 18 divisors (see below), whose sum is σ = 103174890. Its totient is φ = 13605456.

The previous prime is 40816397. The next prime is 40816411. The reversal of 40816404 is 40461804.

It is an interprime number because it is at equal distance from previous prime (40816397) and next prime (40816411).

It can be written as a sum of positive squares in only one way, i.e., 24800400 + 16016004 = 4980^2 + 4002^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 566859 + ... + 566930.

Almost surely, 2^40816404 is an apocalyptic number.

It is an amenable number.

40816404 is an abundant number, since it is smaller than the sum of its proper divisors (62358486).

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

40816404 is a wasteful number, since it uses less digits than its factorization.

40816404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133799 (or 1133794 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 40816404 is about 6388.7717129351. The cubic root of 40816404 is about 344.3062555701.

The spelling of 40816404 in words is "forty million, eight hundred sixteen thousand, four hundred four".