129489192 has 80 divisors (see below), whose sum is σ = 414516960. Its totient is φ = 36995616.

The previous prime is 129489181. The next prime is 129489253. The reversal of 129489192 is 291984921.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9738 + ... + 18809.

It is an arithmetic number, because the mean of its divisors is an integer number (5181462).

Almost surely, 2^129489192 is an apocalyptic number.

129489192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129489192 is an abundant number, since it is smaller than the sum of its proper divisors (285027768).

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

129489192 is a wasteful number, since it uses less digits than its factorization.

129489192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28572 (or 28559 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 129489192 is about 11379.3317905754. The cubic root of 129489192 is about 505.9153310711.

The spelling of 129489192 in words is "one hundred twenty-nine million, four hundred eighty-nine thousand, one hundred ninety-two".