40717887 has 16 divisors (see below), whose sum is σ = 62629632. Its totient is φ = 23048640.

The previous prime is 40717883. The next prime is 40717909. The reversal of 40717887 is 78871704.

It is not a de Polignac number, because 40717887 - 2² = 40717883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40717883) 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, 6814 + ... + 11307.

It is an arithmetic number, because the mean of its divisors is an integer number (3914352).

Almost surely, 2^40717887 is an apocalyptic number.

40717887 is a deficient number, since it is larger than the sum of its proper divisors (21911745).

40717887 is a wasteful number, since it uses less digits than its factorization.

40717887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18238.

The product of its (nonzero) digits is 87808, while the sum is 42.

The square root of 40717887 is about 6381.0568873816. The cubic root of 40717887 is about 344.0290194331.

The spelling of 40717887 in words is "forty million, seven hundred seventeen thousand, eight hundred eighty-seven".