13912169 has 2 divisors, whose sum is σ = 13912170. Its totient is φ = 13912168.

The previous prime is 13912163. The next prime is 13912193. The reversal of 13912169 is 96121931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13778944 + 133225 = 3712^2 + 365^2 .

It is a cyclic number.

It is not a de Polignac number, because 13912169 - 2⁴ = 13912153 is a prime.

It is a super-2 number, since 2×13912169² = 387096892569122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13912163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6956084 + 6956085.

It is an arithmetic number, because the mean of its divisors is an integer number (6956085).

Almost surely, 2^13912169 is an apocalyptic number.

It is an amenable number.

13912169 is a deficient number, since it is larger than the sum of its proper divisors (1).

13912169 is an equidigital number, since it uses as much as digits as its factorization.

13912169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2916, while the sum is 32.

The square root of 13912169 is about 3729.9020094367. The cubic root of 13912169 is about 240.5091563373.

The spelling of 13912169 in words is "thirteen million, nine hundred twelve thousand, one hundred sixty-nine".