13994427 has 4 divisors (see below), whose sum is σ = 18659240. Its totient is φ = 9329616.

The previous prime is 13994411. The next prime is 13994447. The reversal of 13994427 is 72449931.

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

It is not a de Polignac number, because 13994427 - 2⁴ = 13994411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13994447) 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, 2332402 + ... + 2332407.

It is an arithmetic number, because the mean of its divisors is an integer number (4664810).

Almost surely, 2^13994427 is an apocalyptic number.

13994427 is a deficient number, since it is larger than the sum of its proper divisors (4664813).

13994427 is an equidigital number, since it uses as much as digits as its factorization.

13994427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4664812.

The product of its digits is 54432, while the sum is 39.

The square root of 13994427 is about 3740.9125891953. The cubic root of 13994427 is about 240.9822418806.

The spelling of 13994427 in words is "thirteen million, nine hundred ninety-four thousand, four hundred twenty-seven".