40815958 has 16 divisors (see below), whose sum is σ = 63133200. Its totient is φ = 19776096.

The previous prime is 40815953. The next prime is 40815959. The reversal of 40815958 is 85951804.

It is a self number, because there is not a number n which added to its sum of digits gives 40815958.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40815953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19968 + ... + 21916.

It is an arithmetic number, because the mean of its divisors is an integer number (3945825).

Almost surely, 2^40815958 is an apocalyptic number.

40815958 is a deficient number, since it is larger than the sum of its proper divisors (22317242).

40815958 is a wasteful number, since it uses less digits than its factorization.

40815958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2271.

The product of its (nonzero) digits is 57600, while the sum is 40.

The square root of 40815958 is about 6388.7368078518. The cubic root of 40815958 is about 344.3050014898.

The spelling of 40815958 in words is "forty million, eight hundred fifteen thousand, nine hundred fifty-eight".