13791982 has 4 divisors (see below), whose sum is σ = 20687976. Its totient is φ = 6895990.

The previous prime is 13791977. The next prime is 13792001. The reversal of 13791982 is 28919731.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 3447994 + ... + 3447997.

It is an arithmetic number, because the mean of its divisors is an integer number (5171994).

Almost surely, 2^13791982 is an apocalyptic number.

13791982 is a deficient number, since it is larger than the sum of its proper divisors (6895994).

13791982 is an equidigital number, since it uses as much as digits as its factorization.

13791982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6895993.

The product of its digits is 27216, while the sum is 40.

The square root of 13791982 is about 3713.7557808774. The cubic root of 13791982 is about 239.8145674132.

The spelling of 13791982 in words is "thirteen million, seven hundred ninety-one thousand, nine hundred eighty-two".