129397416 has 16 divisors (see below), whose sum is σ = 323493600. Its totient is φ = 43132464.

The previous prime is 129397393. The next prime is 129397423. The reversal of 129397416 is 614793921.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2695756 + ... + 2695803.

It is an arithmetic number, because the mean of its divisors is an integer number (20218350).

Almost surely, 2^129397416 is an apocalyptic number.

It is an amenable number.

129397416 is an abundant number, since it is smaller than the sum of its proper divisors (194096184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129397416 is a wasteful number, since it uses less digits than its factorization.

129397416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5391568 (or 5391564 counting only the distinct ones).

The product of its digits is 81648, while the sum is 42.

The square root of 129397416 is about 11375.2985015779. The cubic root of 129397416 is about 505.7957796285.

The spelling of 129397416 in words is "one hundred twenty-nine million, three hundred ninety-seven thousand, four hundred sixteen".