13939069 has 2 divisors, whose sum is σ = 13939070. Its totient is φ = 13939068.

The previous prime is 13938983. The next prime is 13939087. The reversal of 13939069 is 96093931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11256025 + 2683044 = 3355^2 + 1638^2 .

It is a cyclic number.

It is not a de Polignac number, because 13939069 - 2¹³ = 13930877 is a prime.

It is a super-2 number, since 2×13939069² = 388595289173522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13939469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6969534 + 6969535.

It is an arithmetic number, because the mean of its divisors is an integer number (6969535).

Almost surely, 2^13939069 is an apocalyptic number.

It is an amenable number.

13939069 is a deficient number, since it is larger than the sum of its proper divisors (1).

13939069 is an equidigital number, since it uses as much as digits as its factorization.

13939069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39366, while the sum is 40.

The square root of 13939069 is about 3733.5062608760. The cubic root of 13939069 is about 240.6640694193.

The spelling of 13939069 in words is "thirteen million, nine hundred thirty-nine thousand, sixty-nine".