129891354 has 16 divisors (see below), whose sum is σ = 259915392. Its totient is φ = 43275008.

The previous prime is 129891337. The next prime is 129891371. The reversal of 129891354 is 453198921.

It is an interprime number because it is at equal distance from previous prime (129891337) and next prime (129891371).

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, 11002 + ... + 19514.

It is an arithmetic number, because the mean of its divisors is an integer number (16244712).

Almost surely, 2^129891354 is an apocalyptic number.

129891354 is an abundant number, since it is smaller than the sum of its proper divisors (130024038).

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

129891354 is a wasteful number, since it uses less digits than its factorization.

129891354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11061.

The product of its digits is 77760, while the sum is 42.

The square root of 129891354 is about 11396.9888128400. The cubic root of 129891354 is about 506.4385398644.

The spelling of 129891354 in words is "one hundred twenty-nine million, eight hundred ninety-one thousand, three hundred fifty-four".