13997386 has 32 divisors (see below), whose sum is σ = 23950080. Its totient is φ = 6086784.

The previous prime is 13997383. The next prime is 13997407. The reversal of 13997386 is 68379931.

13997386 is nontrivially palindromic in base 5.

13997386 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (13997383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53091 + ... + 53353.

It is an arithmetic number, because the mean of its divisors is an integer number (748440).

Almost surely, 2^13997386 is an apocalyptic number.

13997386 is a deficient number, since it is larger than the sum of its proper divisors (9952694).

13997386 is a wasteful number, since it uses less digits than its factorization.

13997386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390.

The product of its digits is 244944, while the sum is 46.

The square root of 13997386 is about 3741.3080600239. The cubic root of 13997386 is about 240.9992252175. Note that the first 3 decimals are identical.

The spelling of 13997386 in words is "thirteen million, nine hundred ninety-seven thousand, three hundred eighty-six".