13893974 has 4 divisors (see below), whose sum is σ = 20840964. Its totient is φ = 6946986.

The previous prime is 13893973. The next prime is 13893977. The reversal of 13893974 is 47939831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47939831 = 19 ⋅2523149.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13893973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3473492 + ... + 3473495.

It is an arithmetic number, because the mean of its divisors is an integer number (5210241).

Almost surely, 2^13893974 is an apocalyptic number.

13893974 is a deficient number, since it is larger than the sum of its proper divisors (6946990).

13893974 is an equidigital number, since it uses as much as digits as its factorization.

13893974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6946989.

The product of its digits is 163296, while the sum is 44.

The square root of 13893974 is about 3727.4621393114. The cubic root of 13893974 is about 240.4042608023.

The spelling of 13893974 in words is "thirteen million, eight hundred ninety-three thousand, nine hundred seventy-four".