13879069 has 4 divisors (see below), whose sum is σ = 13889340. Its totient is φ = 13868800.

The previous prime is 13879043. The next prime is 13879091. The reversal of 13879069 is 96097831.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 11303044 + 2576025 = 3362^2 + 1605^2 .

It is a cyclic number.

It is not a de Polignac number, because 13879069 - 2⁵ = 13879037 is a prime.

It is a super-2 number, since 2×13879069² = 385257112613522, 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 (13879969) 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, 2734 + ... + 5935.

It is an arithmetic number, because the mean of its divisors is an integer number (3472335).

Almost surely, 2^13879069 is an apocalyptic number.

It is an amenable number.

13879069 is a deficient number, since it is larger than the sum of its proper divisors (10271).

13879069 is an equidigital number, since it uses as much as digits as its factorization.

13879069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10270.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 13879069 is about 3725.4622531976. The cubic root of 13879069 is about 240.3182641059.

The spelling of 13879069 in words is "thirteen million, eight hundred seventy-nine thousand, sixty-nine".