40372989 has 8 divisors (see below), whose sum is σ = 53860032. Its totient is φ = 26900640.

The previous prime is 40372961. The next prime is 40372991. The reversal of 40372989 is 98927304.

40372989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40372989 - 2⁷ = 40372861 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40372989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40372949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8617 + ... + 12449.

It is an arithmetic number, because the mean of its divisors is an integer number (6732504).

Almost surely, 2^40372989 is an apocalyptic number.

It is an amenable number.

40372989 is a deficient number, since it is larger than the sum of its proper divisors (13487043).

40372989 is a wasteful number, since it uses less digits than its factorization.

40372989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7347.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 40372989 is about 6353.9742681254. The cubic root of 40372989 is about 343.0549059710.

The spelling of 40372989 in words is "forty million, three hundred seventy-two thousand, nine hundred eighty-nine".