40372917 has 12 divisors (see below), whose sum is σ = 58290624. Its totient is φ = 24844560.

The previous prime is 40372903. The next prime is 40372949. The reversal of 40372917 is 71927304.

It is not a de Polignac number, because 40372917 - 2¹⁰ = 40371893 is a prime.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40372117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39309 + ... + 40322.

It is an arithmetic number, because the mean of its divisors is an integer number (4857552).

Almost surely, 2^40372917 is an apocalyptic number.

It is an amenable number.

40372917 is a deficient number, since it is larger than the sum of its proper divisors (17917707).

40372917 is a wasteful number, since it uses less digits than its factorization.

40372917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79660 (or 79647 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 40372917 is about 6353.9686023776. The cubic root of 40372917 is about 343.0547020395.

The spelling of 40372917 in words is "forty million, three hundred seventy-two thousand, nine hundred seventeen".