129390937 has 8 divisors (see below), whose sum is σ = 139483904. Its totient is φ = 119317968.

The previous prime is 129390917. The next prime is 129390973. The reversal of 129390937 is 739093921.

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 129390937 - 2⁷ = 129390809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129390893 and 129390902.

It is not an unprimeable number, because it can be changed into a prime (129390917) 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, 10168 + ... + 19030.

It is an arithmetic number, because the mean of its divisors is an integer number (17435488).

Almost surely, 2^129390937 is an apocalyptic number.

It is an amenable number.

129390937 is a deficient number, since it is larger than the sum of its proper divisors (10092967).

129390937 is a wasteful number, since it uses less digits than its factorization.

129390937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9999.

The product of its (nonzero) digits is 91854, while the sum is 43.

The square root of 129390937 is about 11375.0137142774. The cubic root of 129390937 is about 505.7873376630.

The spelling of 129390937 in words is "one hundred twenty-nine million, three hundred ninety thousand, nine hundred thirty-seven".