104647639 has 2 divisors, whose sum is σ = 104647640. Its totient is φ = 104647638.

The previous prime is 104647637. The next prime is 104647643. The reversal of 104647639 is 936746401.

It is a weak prime.

It is an emirp because it is prime and its reverse (936746401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 104647639 - 2¹ = 104647637 is a prime.

It is a super-2 number, since 2×104647639² = 21902256696548642, which contains 22 as substring.

Together with 104647637, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104647633) 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, 52323819 + 52323820.

It is an arithmetic number, because the mean of its divisors is an integer number (52323820).

Almost surely, 2^104647639 is an apocalyptic number.

104647639 is a deficient number, since it is larger than the sum of its proper divisors (1).

104647639 is an equidigital number, since it uses as much as digits as its factorization.

104647639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 104647639 is about 10229.7428608934. The cubic root of 104647639 is about 471.2410823689.

The spelling of 104647639 in words is "one hundred four million, six hundred forty-seven thousand, six hundred thirty-nine".