13910861 has 4 divisors (see below), whose sum is σ = 13983132. Its totient is φ = 13838592.

The previous prime is 13910851. The next prime is 13910863. The reversal of 13910861 is 16801931.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1876900 + 12033961 = 1370^2 + 3469^2 .

It is a cyclic number.

It is not a de Polignac number, because 13910861 - 2¹⁰ = 13909837 is a prime.

It is a super-2 number, since 2×13910861² = 387024107522642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13910863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35846 + ... + 36231.

It is an arithmetic number, because the mean of its divisors is an integer number (3495783).

Almost surely, 2^13910861 is an apocalyptic number.

It is an amenable number.

13910861 is a deficient number, since it is larger than the sum of its proper divisors (72271).

13910861 is an equidigital number, since it uses as much as digits as its factorization.

13910861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72270.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 13910861 is about 3729.7266655882. The cubic root of 13910861 is about 240.5016186716.

The spelling of 13910861 in words is "thirteen million, nine hundred ten thousand, eight hundred sixty-one".