40665976 has 16 divisors (see below), whose sum is σ = 82114200. Its totient is φ = 18768864.

The previous prime is 40665967. The next prime is 40665991. The reversal of 40665976 is 67956604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195406 + ... + 195613.

Almost surely, 2^40665976 is an apocalyptic number.

It is an amenable number.

40665976 is an abundant number, since it is smaller than the sum of its proper divisors (41448224).

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

40665976 is a wasteful number, since it uses less digits than its factorization.

40665976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391038 (or 391034 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 40665976 is about 6376.9880037522. The cubic root of 40665976 is about 343.8827570529.

The spelling of 40665976 in words is "forty million, six hundred sixty-five thousand, nine hundred seventy-six".