40632913 has 2 divisors, whose sum is σ = 40632914. Its totient is φ = 40632912.

The previous prime is 40632901. The next prime is 40632983. The reversal of 40632913 is 31923604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30603024 + 10029889 = 5532^2 + 3167^2 .

It is a cyclic number.

It is not a de Polignac number, because 40632913 - 2²⁵ = 7078481 is a prime.

It is not a weakly prime, because it can be changed into another prime (40632983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20316456 + 20316457.

It is an arithmetic number, because the mean of its divisors is an integer number (20316457).

Almost surely, 2^40632913 is an apocalyptic number.

It is an amenable number.

40632913 is a deficient number, since it is larger than the sum of its proper divisors (1).

40632913 is an equidigital number, since it uses as much as digits as its factorization.

40632913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 40632913 is about 6374.3951085574. The cubic root of 40632913 is about 343.7895351553.

The spelling of 40632913 in words is "forty million, six hundred thirty-two thousand, nine hundred thirteen".