40166994 has 16 divisors (see below), whose sum is σ = 91810368. Its totient is φ = 11476272.

The previous prime is 40166981. The next prime is 40167047. The reversal of 40166994 is 49966104.

It is a super-2 number, since 2×40166994² = 3226774813992072, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 478137 + ... + 478220.

It is an arithmetic number, because the mean of its divisors is an integer number (5738148).

Almost surely, 2^40166994 is an apocalyptic number.

40166994 is an abundant number, since it is smaller than the sum of its proper divisors (51643374).

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

40166994 is a wasteful number, since it uses less digits than its factorization.

40166994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956369.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 40166994 is about 6337.7436047855. The cubic root of 40166994 is about 342.4704547658.

The spelling of 40166994 in words is "forty million, one hundred sixty-six thousand, nine hundred ninety-four".