40364539 has 2 divisors, whose sum is σ = 40364540. Its totient is φ = 40364538.

The previous prime is 40364509. The next prime is 40364581. The reversal of 40364539 is 93546304.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40364539 - 2⁵ = 40364507 is a prime.

It is not a weakly prime, because it can be changed into another prime (40364509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20182269 + 20182270.

It is an arithmetic number, because the mean of its divisors is an integer number (20182270).

Almost surely, 2^40364539 is an apocalyptic number.

40364539 is a deficient number, since it is larger than the sum of its proper divisors (1).

40364539 is an equidigital number, since it uses as much as digits as its factorization.

40364539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 40364539 is about 6353.3092951626. The cubic root of 40364539 is about 343.0309706924.

The spelling of 40364539 in words is "forty million, three hundred sixty-four thousand, five hundred thirty-nine".