12739982 has 4 divisors (see below), whose sum is σ = 19109976. Its totient is φ = 6369990.

The previous prime is 12739973. The next prime is 12740003. The reversal of 12739982 is 28993721.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3184994 + ... + 3184997.

It is an arithmetic number, because the mean of its divisors is an integer number (4777494).

Almost surely, 2^12739982 is an apocalyptic number.

12739982 is a deficient number, since it is larger than the sum of its proper divisors (6369994).

12739982 is an equidigital number, since it uses as much as digits as its factorization.

12739982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6369993.

The product of its digits is 54432, while the sum is 41.

The square root of 12739982 is about 3569.3111380209. The cubic root of 12739982 is about 233.5552342559. Note that the first 3 decimals are identical.

The spelling of 12739982 in words is "twelve million, seven hundred thirty-nine thousand, nine hundred eighty-two".