129699372 has 24 divisors (see below), whose sum is σ = 330144192. Its totient is φ = 39302800.

The previous prime is 129699343. The next prime is 129699373. The reversal of 129699372 is 273996921.

It is not an unprimeable number, because it can be changed into a prime (129699373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 491154 + ... + 491417.

It is an arithmetic number, because the mean of its divisors is an integer number (13756008).

Almost surely, 2^129699372 is an apocalyptic number.

129699372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129699372 is an abundant number, since it is smaller than the sum of its proper divisors (200444820).

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

129699372 is a wasteful number, since it uses less digits than its factorization.

129699372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982589 (or 982587 counting only the distinct ones).

The product of its digits is 367416, while the sum is 48.

The square root of 129699372 is about 11388.5632105196. The cubic root of 129699372 is about 506.1889080982.

The spelling of 129699372 in words is "one hundred twenty-nine million, six hundred ninety-nine thousand, three hundred seventy-two".