104947639 has 4 divisors (see below), whose sum is σ = 104970600. Its totient is φ = 104924680.

The previous prime is 104947603. The next prime is 104947669. The reversal of 104947639 is 936749401.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 104947639 - 2¹¹ = 104945591 is a prime.

It is a super-2 number, since 2×104947639² = 22028013863348642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 104947595 and 104947604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104947669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2032 + ... + 14629.

It is an arithmetic number, because the mean of its divisors is an integer number (26242650).

Almost surely, 2^104947639 is an apocalyptic number.

104947639 is a deficient number, since it is larger than the sum of its proper divisors (22961).

104947639 is an equidigital number, since it uses as much as digits as its factorization.

104947639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22960.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 104947639 is about 10244.3954921703. The cubic root of 104947639 is about 471.6909649372.

The spelling of 104947639 in words is "one hundred four million, nine hundred forty-seven thousand, six hundred thirty-nine".