12998939 has 8 divisors (see below), whose sum is σ = 13471920. Its totient is φ = 12534496.

The previous prime is 12998903. The next prime is 12998941. The reversal of 12998939 is 93989921.

12998939 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12998939 - 2⁸ = 12998683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12998959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1049 + ... + 5205.

It is an arithmetic number, because the mean of its divisors is an integer number (1683990).

Almost surely, 2^12998939 is an apocalyptic number.

12998939 is a deficient number, since it is larger than the sum of its proper divisors (472981).

12998939 is an equidigital number, since it uses as much as digits as its factorization.

12998939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4269.

The product of its digits is 314928, while the sum is 50.

The square root of 12998939 is about 3605.4041382347. The cubic root of 12998939 is about 235.1270717619.

The spelling of 12998939 in words is "twelve million, nine hundred ninety-eight thousand, nine hundred thirty-nine".