129404937 has 8 divisors (see below), whose sum is σ = 174248640. Its totient is φ = 85415600.

The previous prime is 129404911. The next prime is 129404941. The reversal of 129404937 is 739404921.

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

It is a cyclic number.

It is not a de Polignac number, because 129404937 - 2⁷ = 129404809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129404895 and 129404904.

It is not an unprimeable number, because it can be changed into a prime (129402937) 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, 213237 + ... + 213842.

It is an arithmetic number, because the mean of its divisors is an integer number (21781080).

Almost surely, 2^129404937 is an apocalyptic number.

It is an amenable number.

129404937 is a deficient number, since it is larger than the sum of its proper divisors (44843703).

129404937 is a wasteful number, since it uses less digits than its factorization.

129404937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427183.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 129404937 is about 11375.6290815058. The cubic root of 129404937 is about 505.8055789389.

The spelling of 129404937 in words is "one hundred twenty-nine million, four hundred four thousand, nine hundred thirty-seven".