13910989 has 4 divisors (see below), whose sum is σ = 14139100. Its totient is φ = 13682880.

The previous prime is 13910977. The next prime is 13910993. The reversal of 13910989 is 98901931.

13910989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 5442889 + 8468100 = 2333^2 + 2910^2 .

It is a cyclic number.

It is not a de Polignac number, because 13910989 - 2¹³ = 13902797 is a prime.

It is a super-2 number, since 2×13910989² = 387031229916242, 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 (13910969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113964 + ... + 114085.

It is an arithmetic number, because the mean of its divisors is an integer number (3534775).

Almost surely, 2^13910989 is an apocalyptic number.

It is an amenable number.

13910989 is a deficient number, since it is larger than the sum of its proper divisors (228111).

13910989 is an equidigital number, since it uses as much as digits as its factorization.

13910989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228110.

The product of its (nonzero) digits is 17496, while the sum is 40.

The square root of 13910989 is about 3729.7438249832. The cubic root of 13910989 is about 240.5023563233.

The spelling of 13910989 in words is "thirteen million, nine hundred ten thousand, nine hundred eighty-nine".