40163907 has 16 divisors (see below), whose sum is σ = 62857472. Its totient is φ = 22330080.

The previous prime is 40163899. The next prime is 40163933. The reversal of 40163907 is 70936104.

It is a happy number.

It is not a de Polignac number, because 40163907 - 2³ = 40163899 is a prime.

It is a super-2 number, since 2×40163907² = 3226278851009298, which contains 22 as substring.

It is the 6338-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40163947) by changing a digit.

It is a nontrivial repunit in base 6337.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25069 + ... + 26622.

It is an arithmetic number, because the mean of its divisors is an integer number (3928592).

Almost surely, 2^40163907 is an apocalyptic number.

40163907 is a deficient number, since it is larger than the sum of its proper divisors (22693565).

40163907 is a wasteful number, since it uses less digits than its factorization.

40163907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51738.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 40163907 is about 6337.5000591716. The cubic root of 40163907 is about 342.4616811163.

The spelling of 40163907 in words is "forty million, one hundred sixty-three thousand, nine hundred seven".