129713408 has 72 divisors (see below), whose sum is σ = 286781376. Its totient is φ = 58060800.

The previous prime is 129713387. The next prime is 129713429. The reversal of 129713408 is 804317921.

It is an interprime number because it is at equal distance from previous prime (129713387) and next prime (129713429).

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, 205253 + ... + 205883.

Almost surely, 2^129713408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129713408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143390688).

129713408 is an abundant number, since it is smaller than the sum of its proper divisors (157067968).

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

129713408 is an equidigital number, since it uses as much as digits as its factorization.

129713408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731 (or 717 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 129713408 is about 11389.1794261044. The cubic root of 129713408 is about 506.2071672749.

The spelling of 129713408 in words is "one hundred twenty-nine million, seven hundred thirteen thousand, four hundred eight".