129949358 has 32 divisors (see below), whose sum is σ = 243613440. Its totient is φ = 50506560.

The previous prime is 129949331. The next prime is 129949363. The reversal of 129949358 is 853949921.

It is a happy number.

It is a super-2 number, since 2×129949358² = 33773671289224328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86885 + ... + 88367.

It is an arithmetic number, because the mean of its divisors is an integer number (7612920).

Almost surely, 2^129949358 is an apocalyptic number.

129949358 is a deficient number, since it is larger than the sum of its proper divisors (113664082).

129949358 is a wasteful number, since it uses less digits than its factorization.

129949358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2072.

The product of its digits is 699840, while the sum is 50.

The square root of 129949358 is about 11399.5332360584. The cubic root of 129949358 is about 506.5139133429.

The spelling of 129949358 in words is "one hundred twenty-nine million, nine hundred forty-nine thousand, three hundred fifty-eight".