129390982 has 32 divisors (see below), whose sum is σ = 230310720. Its totient is φ = 53343360.

The previous prime is 129390977. The next prime is 129390991. The reversal of 129390982 is 289093921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170548 + ... + 171304.

It is an arithmetic number, because the mean of its divisors is an integer number (7197210).

Almost surely, 2^129390982 is an apocalyptic number.

129390982 is a deficient number, since it is larger than the sum of its proper divisors (100919738).

129390982 is a wasteful number, since it uses less digits than its factorization.

129390982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 129390982 is about 11375.0156922969. The cubic root of 129390982 is about 505.7873962978.

The spelling of 129390982 in words is "one hundred twenty-nine million, three hundred ninety thousand, nine hundred eighty-two".