129699244 has 12 divisors (see below), whose sum is σ = 238919800. Its totient is φ = 61436448.

The previous prime is 129699233. The next prime is 129699247. The reversal of 129699244 is 442996921.

It is a happy number.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 129699194 and 129699203.

It is not an unprimeable number, because it can be changed into a prime (129699247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 853209 + ... + 853360.

Almost surely, 2^129699244 is an apocalyptic number.

It is an amenable number.

129699244 is a deficient number, since it is larger than the sum of its proper divisors (109220556).

129699244 is a wasteful number, since it uses less digits than its factorization.

129699244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1706592 (or 1706590 counting only the distinct ones).

The product of its digits is 279936, while the sum is 46.

The square root of 129699244 is about 11388.5575908453. The cubic root of 129699244 is about 506.1887415793.

The spelling of 129699244 in words is "one hundred twenty-nine million, six hundred ninety-nine thousand, two hundred forty-four".