13990069 has 4 divisors (see below), whose sum is σ = 14198944. Its totient is φ = 13781196.

The previous prime is 13990043. The next prime is 13990073. The reversal of 13990069 is 96009931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13990069 - 2¹¹ = 13988021 is a prime.

It is a super-2 number, since 2×13990069² = 391444061249522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13990369) 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, 104337 + ... + 104470.

It is an arithmetic number, because the mean of its divisors is an integer number (3549736).

Almost surely, 2^13990069 is an apocalyptic number.

It is an amenable number.

13990069 is a deficient number, since it is larger than the sum of its proper divisors (208875).

13990069 is an equidigital number, since it uses as much as digits as its factorization.

13990069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208874.

The product of its (nonzero) digits is 13122, while the sum is 37.

The square root of 13990069 is about 3740.3300656493. The cubic root of 13990069 is about 240.9572245495.

The spelling of 13990069 in words is "thirteen million, nine hundred ninety thousand, sixty-nine".