634334399 has 12 divisors (see below), whose sum is σ = 670675824. Its totient is φ = 599873472.

The previous prime is 634334387. The next prime is 634334443. The reversal of 634334399 is 993433436.

It is not a de Polignac number, because 634334399 - 2¹⁶ = 634268863 is a prime.

It is a super-3 number, since 3×634334399³ (a number of 27 digits) contains 333 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 (634334299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 261239 + ... + 263655.

It is an arithmetic number, because the mean of its divisors is an integer number (55889652).

Almost surely, 2^634334399 is an apocalyptic number.

634334399 is a deficient number, since it is larger than the sum of its proper divisors (36341425).

634334399 is a wasteful number, since it uses less digits than its factorization.

634334399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3182 (or 3163 counting only the distinct ones).

The product of its digits is 629856, while the sum is 44.

The square root of 634334399 is about 25185.9960890968. The cubic root of 634334399 is about 859.2233835339.

The spelling of 634334399 in words is "six hundred thirty-four million, three hundred thirty-four thousand, three hundred ninety-nine".