40087864 has 16 divisors (see below), whose sum is σ = 75246120. Its totient is φ = 20022240.

The previous prime is 40087843. The next prime is 40087897. The reversal of 40087864 is 46878004.

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, 7327 + ... + 11569.

Almost surely, 2^40087864 is an apocalyptic number.

It is an amenable number.

40087864 is a deficient number, since it is larger than the sum of its proper divisors (35158256).

40087864 is a wasteful number, since it uses less digits than its factorization.

40087864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5430 (or 5426 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 40087864 is about 6331.4977690907. The cubic root of 40087864 is about 342.2454150870.

The spelling of 40087864 in words is "forty million, eighty-seven thousand, eight hundred sixty-four".