45920639 has 2 divisors, whose sum is σ = 45920640. Its totient is φ = 45920638.

The previous prime is 45920629. The next prime is 45920647. The reversal of 45920639 is 93602954.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45920639 - 2²⁰ = 44872063 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45920629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22960319 + 22960320.

It is an arithmetic number, because the mean of its divisors is an integer number (22960320).

Almost surely, 2^45920639 is an apocalyptic number.

45920639 is a deficient number, since it is larger than the sum of its proper divisors (1).

45920639 is an equidigital number, since it uses as much as digits as its factorization.

45920639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 45920639 is about 6776.4768869967. The cubic root of 45920639 is about 358.0986146774.

The spelling of 45920639 in words is "forty-five million, nine hundred twenty thousand, six hundred thirty-nine".