13397943 has 16 divisors (see below), whose sum is σ = 19474560. Its totient is φ = 8143584.

The previous prime is 13397941. The next prime is 13397957. The reversal of 13397943 is 34979331.

13397943 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13397943 - 2¹ = 13397941 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13397941) 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, 1168 + ... + 5306.

It is an arithmetic number, because the mean of its divisors is an integer number (1217160).

Almost surely, 2^13397943 is an apocalyptic number.

13397943 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13397943 is a deficient number, since it is larger than the sum of its proper divisors (6076617).

13397943 is a wasteful number, since it uses less digits than its factorization.

13397943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4238.

The product of its digits is 61236, while the sum is 39.

The square root of 13397943 is about 3660.3200679722. The cubic root of 13397943 is about 237.5086194471.

The spelling of 13397943 in words is "thirteen million, three hundred ninety-seven thousand, nine hundred forty-three".