129673938 has 16 divisors (see below), whose sum is σ = 260185536. Its totient is φ = 43085040.

The previous prime is 129673919. The next prime is 129673963. The reversal of 129673938 is 839376921.

It is a super-3 number, since 3×129673938³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32881 + ... + 36612.

It is an arithmetic number, because the mean of its divisors is an integer number (16261596).

Almost surely, 2^129673938 is an apocalyptic number.

129673938 is an abundant number, since it is smaller than the sum of its proper divisors (130511598).

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

129673938 is a wasteful number, since it uses less digits than its factorization.

129673938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69809.

The product of its digits is 489888, while the sum is 48.

The square root of 129673938 is about 11387.4465092048. The cubic root of 129673938 is about 506.1558181145.

The spelling of 129673938 in words is "one hundred twenty-nine million, six hundred seventy-three thousand, nine hundred thirty-eight".