129869224 has 32 divisors (see below), whose sum is σ = 257696640. Its totient is φ = 61230400.

The previous prime is 129869219. The next prime is 129869227. The reversal of 129869224 is 422968921.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (129869227) 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, 8094 + ... + 18034.

It is an arithmetic number, because the mean of its divisors is an integer number (8053020).

Almost surely, 2^129869224 is an apocalyptic number.

It is an amenable number.

129869224 is a deficient number, since it is larger than the sum of its proper divisors (127827416).

129869224 is a wasteful number, since it uses less digits than its factorization.

129869224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10041 (or 10037 counting only the distinct ones).

The product of its digits is 124416, while the sum is 43.

The square root of 129869224 is about 11396.0179010038. The cubic root of 129869224 is about 506.4097770533.

The spelling of 129869224 in words is "one hundred twenty-nine million, eight hundred sixty-nine thousand, two hundred twenty-four".