13983397 has 4 divisors (see below), whose sum is σ = 14021260. Its totient is φ = 13945536.

The previous prime is 13983391. The next prime is 13983407. The reversal of 13983397 is 79338931.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10764961 + 3218436 = 3281^2 + 1794^2 .

It is a cyclic number.

It is not a de Polignac number, because 13983397 - 2⁷ = 13983269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13983391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18372 + ... + 19117.

It is an arithmetic number, because the mean of its divisors is an integer number (3505315).

Almost surely, 2^13983397 is an apocalyptic number.

It is an amenable number.

13983397 is a deficient number, since it is larger than the sum of its proper divisors (37863).

13983397 is an equidigital number, since it uses as much as digits as its factorization.

13983397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37862.

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

The square root of 13983397 is about 3739.4380593881. The cubic root of 13983397 is about 240.9189135104.

The spelling of 13983397 in words is "thirteen million, nine hundred eighty-three thousand, three hundred ninety-seven".