129390064 has 10 divisors (see below), whose sum is σ = 250693280. Its totient is φ = 64695024.

The previous prime is 129390047. The next prime is 129390067. The reversal of 129390064 is 460093921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129390067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4043424 + ... + 4043455.

It is an arithmetic number, because the mean of its divisors is an integer number (25069328).

Almost surely, 2^129390064 is an apocalyptic number.

It is an amenable number.

129390064 is a deficient number, since it is larger than the sum of its proper divisors (121303216).

129390064 is an equidigital number, since it uses as much as digits as its factorization.

129390064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8086887 (or 8086881 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 129390064 is about 11374.9753406326. The cubic root of 129390064 is about 505.7862001456.

The spelling of 129390064 in words is "one hundred twenty-nine million, three hundred ninety thousand, sixty-four".