13990901 has 4 divisors (see below), whose sum is σ = 14005932. Its totient is φ = 13975872.

The previous prime is 13990891. The next prime is 13990909. The reversal of 13990901 is 10909931.

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 6754801 + 7236100 = 2599^2 + 2690^2 .

It is a cyclic number.

It is not a de Polignac number, because 13990901 - 2¹⁴ = 13974517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13990909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6020 + ... + 8013.

It is an arithmetic number, because the mean of its divisors is an integer number (3501483).

Almost surely, 2^13990901 is an apocalyptic number.

It is an amenable number.

13990901 is a deficient number, since it is larger than the sum of its proper divisors (15031).

13990901 is an equidigital number, since it uses as much as digits as its factorization.

13990901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15030.

The product of its (nonzero) digits is 2187, while the sum is 32.

The square root of 13990901 is about 3740.4412841268. The cubic root of 13990901 is about 240.9620010910.

The spelling of 13990901 in words is "thirteen million, nine hundred ninety thousand, nine hundred one".