129495996 has 60 divisors (see below), whose sum is σ = 386896048. Its totient is φ = 36998208.

The previous prime is 129495983. The next prime is 129495997. The reversal of 129495996 is 699594921.

129495996 is a `hidden beast` number, since 1 + 2 + 9 + 49 + 599 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129495997) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 26281 + ... + 30816.

Almost surely, 2^129495996 is an apocalyptic number.

It is an amenable number.

129495996 is an abundant number, since it is smaller than the sum of its proper divisors (257400052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129495996 is a wasteful number, since it uses less digits than its factorization.

129495996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57120 (or 57109 counting only the distinct ones).

The product of its digits is 1574640, while the sum is 54.

The square root of 129495996 is about 11379.6307497212. The cubic root of 129495996 is about 505.9241920104.

The spelling of 129495996 in words is "one hundred twenty-nine million, four hundred ninety-five thousand, nine hundred ninety-six".