13900261 has 2 divisors, whose sum is σ = 13900262. Its totient is φ = 13900260.

The previous prime is 13900247. The next prime is 13900273. The reversal of 13900261 is 16200931.

13900261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13764100 + 136161 = 3710^2 + 369^2 .

It is a cyclic number.

It is not a de Polignac number, because 13900261 - 2¹⁵ = 13867493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13900231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6950130 + 6950131.

It is an arithmetic number, because the mean of its divisors is an integer number (6950131).

Almost surely, 2^13900261 is an apocalyptic number.

It is an amenable number.

13900261 is a deficient number, since it is larger than the sum of its proper divisors (1).

13900261 is an equidigital number, since it uses as much as digits as its factorization.

13900261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 13900261 is about 3728.3053791233. The cubic root of 13900261 is about 240.4405161764.

It can be divided in two parts, 13900 and 261, that added together give a square (14161 = 119²).

The spelling of 13900261 in words is "thirteen million, nine hundred thousand, two hundred sixty-one".