13890277 has 2 divisors, whose sum is σ = 13890278. Its totient is φ = 13890276.

The previous prime is 13890259. The next prime is 13890287. The reversal of 13890277 is 77209831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10556001 + 3334276 = 3249^2 + 1826^2 .

It is an emirp because it is prime and its reverse (77209831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13890277 - 2¹⁵ = 13857509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13890257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6945138 + 6945139.

It is an arithmetic number, because the mean of its divisors is an integer number (6945139).

Almost surely, 2^13890277 is an apocalyptic number.

It is an amenable number.

13890277 is a deficient number, since it is larger than the sum of its proper divisors (1).

13890277 is an equidigital number, since it uses as much as digits as its factorization.

13890277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 13890277 is about 3726.9661924949. The cubic root of 13890277 is about 240.3829361284.

The spelling of 13890277 in words is "thirteen million, eight hundred ninety thousand, two hundred seventy-seven".