129935944 has 16 divisors (see below), whose sum is σ = 243820800. Its totient is φ = 64917072.

The previous prime is 129935941. The next prime is 129935951. The reversal of 129935944 is 449539921.

It is a super-2 number, since 2×129935944² = 33766699086342272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 129935894 and 129935903.

It is not an unprimeable number, because it can be changed into a prime (129935941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5869 + ... + 17155.

It is an arithmetic number, because the mean of its divisors is an integer number (15238800).

Almost surely, 2^129935944 is an apocalyptic number.

It is an amenable number.

129935944 is a deficient number, since it is larger than the sum of its proper divisors (113884856).

129935944 is a wasteful number, since it uses less digits than its factorization.

129935944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12732 (or 12728 counting only the distinct ones).

The product of its digits is 349920, while the sum is 46.

The square root of 129935944 is about 11398.9448634512. The cubic root of 129935944 is about 506.4964844728.

The spelling of 129935944 in words is "one hundred twenty-nine million, nine hundred thirty-five thousand, nine hundred forty-four".