13898091 has 4 divisors (see below), whose sum is σ = 18530792. Its totient is φ = 9265392.

The previous prime is 13898081. The next prime is 13898113. The reversal of 13898091 is 19089831.

It is a happy number.

13898091 is digitally balanced in base 3, 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 is not a de Polignac number, because 13898091 - 2¹⁵ = 13865323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13898081) 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, 2316346 + ... + 2316351.

It is an arithmetic number, because the mean of its divisors is an integer number (4632698).

Almost surely, 2^13898091 is an apocalyptic number.

13898091 is a deficient number, since it is larger than the sum of its proper divisors (4632701).

13898091 is an equidigital number, since it uses as much as digits as its factorization.

13898091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4632700.

The product of its (nonzero) digits is 15552, while the sum is 39.

The square root of 13898091 is about 3728.0143508307. The cubic root of 13898091 is about 240.4280036278.

The spelling of 13898091 in words is "thirteen million, eight hundred ninety-eight thousand, ninety-one".