104320639 has 2 divisors, whose sum is σ = 104320640. Its totient is φ = 104320638.

The previous prime is 104320633. The next prime is 104320651. The reversal of 104320639 is 936023401.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 104320639 - 2⁵ = 104320607 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104320633) 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, 52160319 + 52160320.

It is an arithmetic number, because the mean of its divisors is an integer number (52160320).

Almost surely, 2^104320639 is an apocalyptic number.

104320639 is a deficient number, since it is larger than the sum of its proper divisors (1).

104320639 is an equidigital number, since it uses as much as digits as its factorization.

104320639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 104320639 is about 10213.7475492593. The cubic root of 104320639 is about 470.7497299301.

The spelling of 104320639 in words is "one hundred four million, three hundred twenty thousand, six hundred thirty-nine".