12839990 has 16 divisors (see below), whose sum is σ = 23157360. Its totient is φ = 5125920.

The previous prime is 12839989. The next prime is 12840001. The reversal of 12839990 is 9993821.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6185 + ... + 7995.

It is an arithmetic number, because the mean of its divisors is an integer number (1447335).

Almost surely, 2^12839990 is an apocalyptic number.

12839990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12839990 is a deficient number, since it is larger than the sum of its proper divisors (10317370).

12839990 is a wasteful number, since it uses less digits than its factorization.

12839990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2527.

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 12839990 is about 3583.2931780696. The cubic root of 12839990 is about 234.1647730302.

The spelling of 12839990 in words is "twelve million, eight hundred thirty-nine thousand, nine hundred ninety".