129900385 has 16 divisors (see below), whose sum is σ = 161390592. Its totient is φ = 100267200.

The previous prime is 129900373. The next prime is 129900431. The reversal of 129900385 is 583009921.

It is not a de Polignac number, because 129900385 - 2⁷ = 129900257 is a prime.

It is a super-2 number, since 2×129900385² = 33748220046296450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60480 + ... + 62590.

It is an arithmetic number, because the mean of its divisors is an integer number (10086912).

Almost surely, 2^129900385 is an apocalyptic number.

It is an amenable number.

129900385 is a deficient number, since it is larger than the sum of its proper divisors (31490207).

129900385 is a wasteful number, since it uses less digits than its factorization.

129900385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2544.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 129900385 is about 11397.3850070970. The cubic root of 129900385 is about 506.4502767001.

The spelling of 129900385 in words is "one hundred twenty-nine million, nine hundred thousand, three hundred eighty-five".