129572799 has 32 divisors (see below), whose sum is σ = 186831360. Its totient is φ = 79632000.

The previous prime is 129572797. The next prime is 129572873. The reversal of 129572799 is 997275921.

It is not a de Polignac number, because 129572799 - 2¹ = 129572797 is a prime.

It is a super-2 number, since 2×129572799² = 33578220481388802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129572797) 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, 408589 + ... + 408905.

It is an arithmetic number, because the mean of its divisors is an integer number (5838480).

Almost surely, 2^129572799 is an apocalyptic number.

129572799 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

129572799 is a deficient number, since it is larger than the sum of its proper divisors (57258561).

129572799 is a wasteful number, since it uses less digits than its factorization.

129572799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511.

The product of its digits is 714420, while the sum is 51.

The square root of 129572799 is about 11383.0048317656. The cubic root of 129572799 is about 506.0241920558.

The spelling of 129572799 in words is "one hundred twenty-nine million, five hundred seventy-two thousand, seven hundred ninety-nine".