129352977 has 32 divisors (see below), whose sum is σ = 210792960. Its totient is φ = 77898240.

The previous prime is 129352973. The next prime is 129352997. The reversal of 129352977 is 779253921.

It is not a de Polignac number, because 129352977 - 2² = 129352973 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129352973) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12577 + ... + 20417.

It is an arithmetic number, because the mean of its divisors is an integer number (6587280).

Almost surely, 2^129352977 is an apocalyptic number.

It is an amenable number.

129352977 is a deficient number, since it is larger than the sum of its proper divisors (81439983).

129352977 is a wasteful number, since it uses less digits than its factorization.

129352977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7910 (or 7904 counting only the distinct ones).

The product of its digits is 238140, while the sum is 45.

The square root of 129352977 is about 11373.3450224637. The cubic root of 129352977 is about 505.7378711247.

The spelling of 129352977 in words is "one hundred twenty-nine million, three hundred fifty-two thousand, nine hundred seventy-seven".