13397983 has 24 divisors (see below), whose sum is σ = 15572480. Its totient is φ = 11476080.

The previous prime is 13397981. The next prime is 13397987. The reversal of 13397983 is 38979331.

It is not a de Polignac number, because 13397983 - 2¹ = 13397981 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13397981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 311560 + ... + 311602.

Almost surely, 2^13397983 is an apocalyptic number.

13397983 is a deficient number, since it is larger than the sum of its proper divisors (2174497).

13397983 is a wasteful number, since it uses less digits than its factorization.

13397983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 116 counting only the distinct ones).

The product of its digits is 122472, while the sum is 43.

The square root of 13397983 is about 3660.3255319712. The cubic root of 13397983 is about 237.5088558101.

The spelling of 13397983 in words is "thirteen million, three hundred ninety-seven thousand, nine hundred eighty-three".