129549764 has 12 divisors (see below), whose sum is σ = 226802688. Its totient is φ = 64749000.

The previous prime is 129549751. The next prime is 129549767. The reversal of 129549764 is 467945921.

It is not an unprimeable number, because it can be changed into a prime (129549767) 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, 8789 + ... + 18339.

It is an arithmetic number, because the mean of its divisors is an integer number (18900224).

Almost surely, 2^129549764 is an apocalyptic number.

It is an amenable number.

129549764 is a deficient number, since it is larger than the sum of its proper divisors (97252924).

129549764 is a wasteful number, since it uses less digits than its factorization.

129549764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12946 (or 12944 counting only the distinct ones).

The product of its digits is 544320, while the sum is 47.

The square root of 129549764 is about 11381.9929713561. The cubic root of 129549764 is about 505.9942038737.

The spelling of 129549764 in words is "one hundred twenty-nine million, five hundred forty-nine thousand, seven hundred sixty-four".