104971639 has 2 divisors, whose sum is σ = 104971640. Its totient is φ = 104971638.

The previous prime is 104971631. The next prime is 104971649. The reversal of 104971639 is 936179401.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 104971639 - 2³ = 104971631 is a prime.

It is a super-2 number, since 2×104971639² = 22038089988692642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104971631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52485819 + 52485820.

It is an arithmetic number, because the mean of its divisors is an integer number (52485820).

Almost surely, 2^104971639 is an apocalyptic number.

104971639 is a deficient number, since it is larger than the sum of its proper divisors (1).

104971639 is an equidigital number, since it uses as much as digits as its factorization.

104971639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 104971639 is about 10245.5667974007. The cubic root of 104971639 is about 471.7269184865.

The spelling of 104971639 in words is "one hundred four million, nine hundred seventy-one thousand, six hundred thirty-nine".