13994426 has 4 divisors (see below), whose sum is σ = 20991642. Its totient is φ = 6997212.

The previous prime is 13994411. The next prime is 13994447. The reversal of 13994426 is 62449931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62449931 = 1091 ⋅57241.

It can be written as a sum of positive squares in only one way, i.e., 13697401 + 297025 = 3701^2 + 545^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13994426.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3498605 + ... + 3498608.

Almost surely, 2^13994426 is an apocalyptic number.

13994426 is a deficient number, since it is larger than the sum of its proper divisors (6997216).

13994426 is an equidigital number, since it uses as much as digits as its factorization.

13994426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6997215.

The product of its digits is 46656, while the sum is 38.

The square root of 13994426 is about 3740.9124555381. The cubic root of 13994426 is about 240.9822361407.

The spelling of 13994426 in words is "thirteen million, nine hundred ninety-four thousand, four hundred twenty-six".