129669476 has 12 divisors (see below), whose sum is σ = 227015040. Its totient is φ = 64808040.

The previous prime is 129669473. The next prime is 129669521. The reversal of 129669476 is 674966921.

It is a super-2 number, since 2×129669476² = 33628346012229152, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (129669473) 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, 7685 + ... + 17843.

It is an arithmetic number, because the mean of its divisors is an integer number (18917920).

Almost surely, 2^129669476 is an apocalyptic number.

It is an amenable number.

129669476 is a deficient number, since it is larger than the sum of its proper divisors (97345564).

129669476 is a wasteful number, since it uses less digits than its factorization.

129669476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13354 (or 13352 counting only the distinct ones).

The product of its digits is 979776, while the sum is 50.

The square root of 129669476 is about 11387.2505900239. The cubic root of 129669476 is about 506.1500125450.

The spelling of 129669476 in words is "one hundred twenty-nine million, six hundred sixty-nine thousand, four hundred seventy-six".