129883646 has 8 divisors (see below), whose sum is σ = 194876280. Its totient is φ = 64924888.

The previous prime is 129883627. The next prime is 129883661. The reversal of 129883646 is 646388921.

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

It is a super-2 number, since 2×129883646² = 33739522996506632, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 129883646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6200 + ... + 17268.

It is an arithmetic number, because the mean of its divisors is an integer number (24359535).

Almost surely, 2^129883646 is an apocalyptic number.

129883646 is a deficient number, since it is larger than the sum of its proper divisors (64992634).

129883646 is a wasteful number, since it uses less digits than its factorization.

129883646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16938.

The product of its digits is 497664, while the sum is 47.

The square root of 129883646 is about 11396.6506483265. The cubic root of 129883646 is about 506.4285219908.

The spelling of 129883646 in words is "one hundred twenty-nine million, eight hundred eighty-three thousand, six hundred forty-six".