129938977 has 8 divisors (see below), whose sum is σ = 148613696. Its totient is φ = 111292272.

The previous prime is 129938959. The next prime is 129938989. The reversal of 129938977 is 779839921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 129938977 - 2¹⁵ = 129906209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129938917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4123 + ... + 16639.

It is an arithmetic number, because the mean of its divisors is an integer number (18576712).

Almost surely, 2^129938977 is an apocalyptic number.

It is an amenable number.

129938977 is a deficient number, since it is larger than the sum of its proper divisors (18674719).

129938977 is a wasteful number, since it uses less digits than its factorization.

129938977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14007.

The product of its digits is 1714608, while the sum is 55.

The square root of 129938977 is about 11399.0779013041. The cubic root of 129938977 is about 506.5004253682.

The spelling of 129938977 in words is "one hundred twenty-nine million, nine hundred thirty-eight thousand, nine hundred seventy-seven".