129898492 has 6 divisors (see below), whose sum is σ = 227322368. Its totient is φ = 64949244.

The previous prime is 129898487. The next prime is 129898493. The reversal of 129898492 is 294898921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129898493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16237308 + ... + 16237315.

Almost surely, 2^129898492 is an apocalyptic number.

It is an amenable number.

129898492 is a deficient number, since it is larger than the sum of its proper divisors (97423876).

129898492 is a wasteful number, since it uses less digits than its factorization.

129898492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32474627 (or 32474625 counting only the distinct ones).

The product of its digits is 746496, while the sum is 52.

The square root of 129898492 is about 11397.3019614293. The cubic root of 129898492 is about 506.4478165713.

The spelling of 129898492 in words is "one hundred twenty-nine million, eight hundred ninety-eight thousand, four hundred ninety-two".