129913097 has 4 divisors (see below), whose sum is σ = 130331136. Its totient is φ = 129495060.

The previous prime is 129913073. The next prime is 129913117. The reversal of 129913097 is 790319921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 790319921 = 31 ⋅25494191.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129913097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129913037) 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, 208553 + ... + 209174.

It is an arithmetic number, because the mean of its divisors is an integer number (32582784).

Almost surely, 2^129913097 is an apocalyptic number.

It is an amenable number.

129913097 is a deficient number, since it is larger than the sum of its proper divisors (418039).

129913097 is an equidigital number, since it uses as much as digits as its factorization.

129913097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418038.

The product of its (nonzero) digits is 30618, while the sum is 41.

The square root of 129913097 is about 11397.9426652357. The cubic root of 129913097 is about 506.4667965021.

The spelling of 129913097 in words is "one hundred twenty-nine million, nine hundred thirteen thousand, ninety-seven".