13894669 has 2 divisors, whose sum is σ = 13894670. Its totient is φ = 13894668.

The previous prime is 13894667. The next prime is 13894687. The reversal of 13894669 is 96649831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13875625 + 19044 = 3725^2 + 138^2 .

It is a cyclic number.

It is not a de Polignac number, because 13894669 - 2¹ = 13894667 is a prime.

It is a super-2 number, since 2×13894669² = 386123653239122, which contains 22 as substring.

Together with 13894667, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13894663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6947334 + 6947335.

It is an arithmetic number, because the mean of its divisors is an integer number (6947335).

Almost surely, 2^13894669 is an apocalyptic number.

It is an amenable number.

13894669 is a deficient number, since it is larger than the sum of its proper divisors (1).

13894669 is an equidigital number, since it uses as much as digits as its factorization.

13894669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 46.

The square root of 13894669 is about 3727.5553651153. Note that the first 3 decimals coincide. The cubic root of 13894669 is about 240.4082692109.

The spelling of 13894669 in words is "thirteen million, eight hundred ninety-four thousand, six hundred sixty-nine".