129733299 has 8 divisors (see below), whose sum is σ = 192197520. Its totient is φ = 86488848.

The previous prime is 129733291. The next prime is 129733313. The reversal of 129733299 is 992337921.

It is a happy number.

It is not a de Polignac number, because 129733299 - 2³ = 129733291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129733291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2402442 + ... + 2402495.

It is an arithmetic number, because the mean of its divisors is an integer number (24024690).

Almost surely, 2^129733299 is an apocalyptic number.

129733299 is a deficient number, since it is larger than the sum of its proper divisors (62464221).

129733299 is an equidigital number, since it uses as much as digits as its factorization.

129733299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4804946 (or 4804940 counting only the distinct ones).

The product of its digits is 183708, while the sum is 45.

The square root of 129733299 is about 11390.0526337678. The cubic root of 129733299 is about 506.2330408585.

It can be divided in two parts, 1297 and 33299, that added together give a square (34596 = 186²).

The spelling of 129733299 in words is "one hundred twenty-nine million, seven hundred thirty-three thousand, two hundred ninety-nine".