104308639 has 2 divisors, whose sum is σ = 104308640. Its totient is φ = 104308638.

The previous prime is 104308609. The next prime is 104308663. The reversal of 104308639 is 936803401.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 104308639 - 2²³ = 95920031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104308609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52154319 + 52154320.

It is an arithmetic number, because the mean of its divisors is an integer number (52154320).

Almost surely, 2^104308639 is an apocalyptic number.

104308639 is a deficient number, since it is larger than the sum of its proper divisors (1).

104308639 is an equidigital number, since it uses as much as digits as its factorization.

104308639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 104308639 is about 10213.1600888266. The cubic root of 104308639 is about 470.7316791288.

The spelling of 104308639 in words is "one hundred four million, three hundred eight thousand, six hundred thirty-nine".