40813915 has 8 divisors (see below), whose sum is σ = 49051728. Its totient is φ = 32601120.

The previous prime is 40813909. The next prime is 40813939. The reversal of 40813915 is 51931804.

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

It is not a de Polignac number, because 40813915 - 2⁹ = 40813403 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2452 + ... + 9361.

It is an arithmetic number, because the mean of its divisors is an integer number (6131466).

Almost surely, 2^40813915 is an apocalyptic number.

40813915 is a deficient number, since it is larger than the sum of its proper divisors (8237813).

40813915 is a wasteful number, since it uses less digits than its factorization.

40813915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12509.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 40813915 is about 6388.5769150884. The cubic root of 40813915 is about 344.2992567853.

The spelling of 40813915 in words is "forty million, eight hundred thirteen thousand, nine hundred fifteen".