40917913 has 2 divisors, whose sum is σ = 40917914. Its totient is φ = 40917912.

The previous prime is 40917809. The next prime is 40917917. The reversal of 40917913 is 31971904.

40917913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31899904 + 9018009 = 5648^2 + 3003^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40917913 is a prime.

It is not a weakly prime, because it can be changed into another prime (40917917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20458956 + 20458957.

It is an arithmetic number, because the mean of its divisors is an integer number (20458957).

Almost surely, 2^40917913 is an apocalyptic number.

It is an amenable number.

40917913 is a deficient number, since it is larger than the sum of its proper divisors (1).

40917913 is an equidigital number, since it uses as much as digits as its factorization.

40917913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 40917913 is about 6396.7111080617. The cubic root of 40917913 is about 344.5914452401.

The spelling of 40917913 in words is "forty million, nine hundred seventeen thousand, nine hundred thirteen".