104863639 has 2 divisors, whose sum is σ = 104863640. Its totient is φ = 104863638.

The previous prime is 104863637. The next prime is 104863687. The reversal of 104863639 is 936368401.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 104863639 - 2¹ = 104863637 is a prime.

Together with 104863637, 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 (104863631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52431819 + 52431820.

It is an arithmetic number, because the mean of its divisors is an integer number (52431820).

Almost surely, 2^104863639 is an apocalyptic number.

104863639 is a deficient number, since it is larger than the sum of its proper divisors (1).

104863639 is an equidigital number, since it uses as much as digits as its factorization.

104863639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 104863639 is about 10240.2948688014. The cubic root of 104863639 is about 471.5650843321.

The spelling of 104863639 in words is "one hundred four million, eight hundred sixty-three thousand, six hundred thirty-nine".