13992869 has 4 divisors (see below), whose sum is σ = 15264960. Its totient is φ = 12720780.

The previous prime is 13992863. The next prime is 13992871. The reversal of 13992869 is 96829931.

13992869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 13992869 - 2⁸ = 13992613 is a prime.

It is a super-2 number, since 2×13992869² = 391600765702322, 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 (13992863) 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, 636029 + ... + 636050.

It is an arithmetic number, because the mean of its divisors is an integer number (3816240).

Almost surely, 2^13992869 is an apocalyptic number.

It is an amenable number.

13992869 is a deficient number, since it is larger than the sum of its proper divisors (1272091).

13992869 is a wasteful number, since it uses less digits than its factorization.

13992869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272090.

The product of its digits is 209952, while the sum is 47.

The square root of 13992869 is about 3740.7043454408. The cubic root of 13992869 is about 240.9732986952.

The spelling of 13992869 in words is "thirteen million, nine hundred ninety-two thousand, eight hundred sixty-nine".