634429137 has 16 divisors (see below), whose sum is σ = 896337792. Its totient is φ = 397774080.

The previous prime is 634429129. The next prime is 634429139. The reversal of 634429137 is 731924436.

634429137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 634429137 - 2³ = 634429129 is a prime.

It is a super-3 number, since 3×634429137³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 634429095 and 634429104.

It is not an unprimeable number, because it can be changed into a prime (634429139) 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, 78087 + ... + 85827.

It is an arithmetic number, because the mean of its divisors is an integer number (56021112).

Almost surely, 2^634429137 is an apocalyptic number.

It is an amenable number.

634429137 is a deficient number, since it is larger than the sum of its proper divisors (261908655).

634429137 is a wasteful number, since it uses less digits than its factorization.

634429137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9368.

The product of its digits is 108864, while the sum is 39.

The square root of 634429137 is about 25187.8767862637. The cubic root of 634429137 is about 859.2661564798.

The spelling of 634429137 in words is "six hundred thirty-four million, four hundred twenty-nine thousand, one hundred thirty-seven".