40166931 has 16 divisors (see below), whose sum is σ = 64428800. Its totient is φ = 21744288.

The previous prime is 40166927. The next prime is 40166933. The reversal of 40166931 is 13966104.

It is not a de Polignac number, because 40166931 - 2² = 40166927 is a prime.

It is a super-2 number, since 2×40166931² = 3226764691917522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40166933) 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, 49936 + ... + 50733.

It is an arithmetic number, because the mean of its divisors is an integer number (4026800).

Almost surely, 2^40166931 is an apocalyptic number.

40166931 is a deficient number, since it is larger than the sum of its proper divisors (24261869).

40166931 is a wasteful number, since it uses less digits than its factorization.

40166931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100698.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 40166931 is about 6337.7386345604. The cubic root of 40166931 is about 342.4702757162.

The spelling of 40166931 in words is "forty million, one hundred sixty-six thousand, nine hundred thirty-one".