129467961 has 24 divisors (see below), whose sum is σ = 215851584. Its totient is φ = 73245600.

The previous prime is 129467953. The next prime is 129467983. The reversal of 129467961 is 169764921.

129467961 is a `hidden beast` number, since 129 + 467 + 9 + 61 = 666.

It is not a de Polignac number, because 129467961 - 2³ = 129467953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129467941) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3811 + ... + 16536.

It is an arithmetic number, because the mean of its divisors is an integer number (8993816).

Almost surely, 2^129467961 is an apocalyptic number.

It is an amenable number.

129467961 is a deficient number, since it is larger than the sum of its proper divisors (86383623).

129467961 is a wasteful number, since it uses less digits than its factorization.

129467961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20461 (or 20458 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 129467961 is about 11378.3988768192. The cubic root of 129467961 is about 505.8876796629.

The spelling of 129467961 in words is "one hundred twenty-nine million, four hundred sixty-seven thousand, nine hundred sixty-one".