13389994 has 4 divisors (see below), whose sum is σ = 20084994. Its totient is φ = 6694996.

The previous prime is 13389953. The next prime is 13389997. The reversal of 13389994 is 49998331.

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

It can be written as a sum of positive squares in only one way, i.e., 11471769 + 1918225 = 3387^2 + 1385^2 .

It is not an unprimeable number, because it can be changed into a prime (13389997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3347497 + ... + 3347500.

Almost surely, 2^13389994 is an apocalyptic number.

13389994 is a deficient number, since it is larger than the sum of its proper divisors (6695000).

13389994 is an equidigital number, since it uses as much as digits as its factorization.

13389994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6694999.

The product of its digits is 209952, while the sum is 46.

The square root of 13389994 is about 3659.2340728628. The cubic root of 13389994 is about 237.4616388642.

The spelling of 13389994 in words is "thirteen million, three hundred eighty-nine thousand, nine hundred ninety-four".