104776391 has 4 divisors (see below), whose sum is σ = 108389400. Its totient is φ = 101163384.

The previous prime is 104776381. The next prime is 104776403. The reversal of 104776391 is 193677401.

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 104776391 - 2²² = 100582087 is a prime.

It is a super-2 number, since 2×104776391² = 21956184221969762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104776351) 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, 1806461 + ... + 1806518.

It is an arithmetic number, because the mean of its divisors is an integer number (27097350).

Almost surely, 2^104776391 is an apocalyptic number.

104776391 is a deficient number, since it is larger than the sum of its proper divisors (3613009).

104776391 is an equidigital number, since it uses as much as digits as its factorization.

104776391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3613008.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 104776391 is about 10236.0339487518. The cubic root of 104776391 is about 471.4342651505.

The spelling of 104776391 in words is "one hundred four million, seven hundred seventy-six thousand, three hundred ninety-one".