40340915 has 32 divisors (see below), whose sum is σ = 53581824. Its totient is φ = 29030400.

The previous prime is 40340903. The next prime is 40340953. The reversal of 40340915 is 51904304.

It is not a de Polignac number, because 40340915 - 2²⁰ = 39292339 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 317582 + ... + 317708.

It is an arithmetic number, because the mean of its divisors is an integer number (1674432).

Almost surely, 2^40340915 is an apocalyptic number.

40340915 is a deficient number, since it is larger than the sum of its proper divisors (13240909).

40340915 is a wasteful number, since it uses less digits than its factorization.

40340915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 40340915 is about 6351.4498344866. The cubic root of 40340915 is about 342.9640361560.

The spelling of 40340915 in words is "forty million, three hundred forty thousand, nine hundred fifteen".