40086913 has 2 divisors, whose sum is σ = 40086914. Its totient is φ = 40086912.

The previous prime is 40086881. The next prime is 40086923. The reversal of 40086913 is 31968004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21836929 + 18249984 = 4673^2 + 4272^2 .

It is a cyclic number.

It is not a de Polignac number, because 40086913 - 2⁵ = 40086881 is a prime.

It is not a weakly prime, because it can be changed into another prime (40086923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20043456 + 20043457.

It is an arithmetic number, because the mean of its divisors is an integer number (20043457).

Almost surely, 2^40086913 is an apocalyptic number.

It is an amenable number.

40086913 is a deficient number, since it is larger than the sum of its proper divisors (1).

40086913 is an equidigital number, since it uses as much as digits as its factorization.

40086913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 40086913 is about 6331.4226679318. The cubic root of 40086913 is about 342.2427087155.

The spelling of 40086913 in words is "forty million, eighty-six thousand, nine hundred thirteen".