129403864 has 32 divisors (see below), whose sum is σ = 259815600. Its totient is φ = 60206080.

The previous prime is 129403853. The next prime is 129403873. The reversal of 129403864 is 468304921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6759 + ... + 17449.

Almost surely, 2^129403864 is an apocalyptic number.

It is an amenable number.

129403864 is an abundant number, since it is smaller than the sum of its proper divisors (130411736).

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

129403864 is a wasteful number, since it uses less digits than its factorization.

129403864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10803 (or 10799 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 129403864 is about 11375.5819191811. The cubic root of 129403864 is about 505.8041809220.

The spelling of 129403864 in words is "one hundred twenty-nine million, four hundred three thousand, eight hundred sixty-four".