12839432 has 8 divisors (see below), whose sum is σ = 24073950. Its totient is φ = 6419712.

The previous prime is 12839429. The next prime is 12839443. The reversal of 12839432 is 23493821.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10666756 + 2172676 = 3266^2 + 1474^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 802457 + ... + 802472.

Almost surely, 2^12839432 is an apocalyptic number.

It is an amenable number.

12839432 is a deficient number, since it is larger than the sum of its proper divisors (11234518).

12839432 is a wasteful number, since it uses less digits than its factorization.

12839432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1604935 (or 1604931 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 12839432 is about 3583.2153158860. The cubic root of 12839432 is about 234.1613808719.

The spelling of 12839432 in words is "twelve million, eight hundred thirty-nine thousand, four hundred thirty-two".