129919396 has 12 divisors (see below), whose sum is σ = 227438848. Its totient is φ = 64936872.

The previous prime is 129919393. The next prime is 129919409. The reversal of 129919396 is 693919921.

It is not an unprimeable number, because it can be changed into a prime (129919393) 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, 18625 + ... + 24631.

Almost surely, 2^129919396 is an apocalyptic number.

It is an amenable number.

129919396 is a deficient number, since it is larger than the sum of its proper divisors (97519452).

129919396 is a wasteful number, since it uses less digits than its factorization.

129919396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11418 (or 11416 counting only the distinct ones).

The product of its digits is 236196, while the sum is 49.

The square root of 129919396 is about 11398.2189836834. The cubic root of 129919396 is about 506.4749819298.

The spelling of 129919396 in words is "one hundred twenty-nine million, nine hundred nineteen thousand, three hundred ninety-six".