634839373 has 4 divisors (see below), whose sum is σ = 725530720. Its totient is φ = 544148028.

The previous prime is 634839341. The next prime is 634839379. The reversal of 634839373 is 373938436.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 634839373 - 2⁵ = 634839341 is a prime.

It is a super-2 number, since 2×634839373² = 806042059022066258, 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 (634839379) 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, 45345663 + ... + 45345676.

It is an arithmetic number, because the mean of its divisors is an integer number (181382680).

Almost surely, 2^634839373 is an apocalyptic number.

It is an amenable number.

634839373 is a deficient number, since it is larger than the sum of its proper divisors (90691347).

634839373 is an equidigital number, since it uses as much as digits as its factorization.

634839373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90691346.

The product of its digits is 979776, while the sum is 46.

The square root of 634839373 is about 25196.0189911025. The cubic root of 634839373 is about 859.4513234481.

The spelling of 634839373 in words is "six hundred thirty-four million, eight hundred thirty-nine thousand, three hundred seventy-three".