40905117 has 12 divisors (see below), whose sum is σ = 64456704. Its totient is φ = 24790920.

The previous prime is 40905107. The next prime is 40905131. The reversal of 40905117 is 71150904.

It is not a de Polignac number, because 40905117 - 2⁷ = 40904989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40905107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 206493 + ... + 206690.

It is an arithmetic number, because the mean of its divisors is an integer number (5371392).

Almost surely, 2^40905117 is an apocalyptic number.

It is an amenable number.

40905117 is a deficient number, since it is larger than the sum of its proper divisors (23551587).

40905117 is a wasteful number, since it uses less digits than its factorization.

40905117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413200 (or 413197 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 40905117 is about 6395.7108283599. The cubic root of 40905117 is about 344.5555208610. Note that the first 4 decimals are identical.

The spelling of 40905117 in words is "forty million, nine hundred five thousand, one hundred seventeen".