40699913 has 2 divisors, whose sum is σ = 40699914. Its totient is φ = 40699912.

The previous prime is 40699907. The next prime is 40699927. The reversal of 40699913 is 31999604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25270729 + 15429184 = 5027^2 + 3928^2 .

It is a cyclic number.

It is not a de Polignac number, because 40699913 - 2⁸ = 40699657 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (40699613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20349956 + 20349957.

It is an arithmetic number, because the mean of its divisors is an integer number (20349957).

Almost surely, 2^40699913 is an apocalyptic number.

It is an amenable number.

40699913 is a deficient number, since it is larger than the sum of its proper divisors (1).

40699913 is an equidigital number, since it uses as much as digits as its factorization.

40699913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 40699913 is about 6379.6483445406. The cubic root of 40699913 is about 343.9783906788.

The spelling of 40699913 in words is "forty million, six hundred ninety-nine thousand, nine hundred thirteen".