129946945 has 8 divisors (see below), whose sum is σ = 155998080. Its totient is φ = 103916400.

The previous prime is 129946933. The next prime is 129946951. The reversal of 129946945 is 549649921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 129946945 - 2¹¹ = 129944897 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19336 + ... + 25174.

It is an arithmetic number, because the mean of its divisors is an integer number (19499760).

Almost surely, 2^129946945 is an apocalyptic number.

It is an amenable number.

129946945 is a deficient number, since it is larger than the sum of its proper divisors (26051135).

129946945 is an equidigital number, since it uses as much as digits as its factorization.

129946945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10295.

The product of its digits is 699840, while the sum is 49.

The square root of 129946945 is about 11399.4273979003. The cubic root of 129946945 is about 506.5107782097.

The spelling of 129946945 in words is "one hundred twenty-nine million, nine hundred forty-six thousand, nine hundred forty-five".