129927464 has 24 divisors (see below), whose sum is σ = 258791790. Its totient is φ = 61141248.

The previous prime is 129927449. The next prime is 129927487. The reversal of 129927464 is 464729921.

It can be written as a sum of positive squares in 3 ways, for example, as 105226564 + 24700900 = 10258^2 + 4970^2 .

It is a super-2 number, since 2×129927464² = 33762291802942592, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25787 + ... + 30410.

Almost surely, 2^129927464 is an apocalyptic number.

It is an amenable number.

129927464 is a deficient number, since it is larger than the sum of its proper divisors (128864326).

129927464 is a wasteful number, since it uses less digits than its factorization.

129927464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56237 (or 56216 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 129927464 is about 11398.5728931301. The cubic root of 129927464 is about 506.4854657521.

The spelling of 129927464 in words is "one hundred twenty-nine million, nine hundred twenty-seven thousand, four hundred sixty-four".