40364939 has 2 divisors, whose sum is σ = 40364940. Its totient is φ = 40364938.

The previous prime is 40364927. The next prime is 40364957. The reversal of 40364939 is 93946304.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40364939 - 2⁴ = 40364923 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40364969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20182469 + 20182470.

It is an arithmetic number, because the mean of its divisors is an integer number (20182470).

Almost surely, 2^40364939 is an apocalyptic number.

40364939 is a deficient number, since it is larger than the sum of its proper divisors (1).

40364939 is an equidigital number, since it uses as much as digits as its factorization.

40364939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 38.

The square root of 40364939 is about 6353.3407747421. The cubic root of 40364939 is about 343.0321037987.

The spelling of 40364939 in words is "forty million, three hundred sixty-four thousand, nine hundred thirty-nine".