634444338 has 32 divisors (see below), whose sum is σ = 1385164800. Its totient is φ = 192127760.

The previous prime is 634444337. The next prime is 634444361. The reversal of 634444338 is 833444436.

It is a junction number, because it is equal to n+sod(n) for n = 634444296 and 634444305.

It is not an unprimeable number, because it can be changed into a prime (634444331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156331 + ... + 160337.

It is an arithmetic number, because the mean of its divisors is an integer number (43286400).

Almost surely, 2^634444338 is an apocalyptic number.

634444338 is an abundant number, since it is smaller than the sum of its proper divisors (750720462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

634444338 is a wasteful number, since it uses less digits than its factorization.

634444338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6422.

The product of its digits is 331776, while the sum is 39.

The square root of 634444338 is about 25188.1785367660. The cubic root of 634444338 is about 859.2730191325.

The spelling of 634444338 in words is "six hundred thirty-four million, four hundred forty-four thousand, three hundred thirty-eight".