129446946 has 24 divisors (see below), whose sum is σ = 280874880. Its totient is φ = 43086456.

The previous prime is 129446903. The next prime is 129446957. The reversal of 129446946 is 649644921.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8535 + ... + 18213.

It is an arithmetic number, because the mean of its divisors is an integer number (11703120).

Almost surely, 2^129446946 is an apocalyptic number.

129446946 is an abundant number, since it is smaller than the sum of its proper divisors (151427934).

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

129446946 is a wasteful number, since it uses less digits than its factorization.

129446946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10430 (or 10427 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 129446946 is about 11377.4753790109. The cubic root of 129446946 is about 505.8603065976.

The spelling of 129446946 in words is "one hundred twenty-nine million, four hundred forty-six thousand, nine hundred forty-six".