13898931 has 8 divisors (see below), whose sum is σ = 18755520. Its totient is φ = 9154152.

The previous prime is 13898897. The next prime is 13898947. The reversal of 13898931 is 13989831.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13898931 - 2⁹ = 13898419 is a prime.

It is a super-2 number, since 2×13898931² = 386360565885522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (13898971) 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 7 ways as a sum of consecutive naturals, for example, 27661 + ... + 28158.

It is an arithmetic number, because the mean of its divisors is an integer number (2344440).

Almost surely, 2^13898931 is an apocalyptic number.

13898931 is a deficient number, since it is larger than the sum of its proper divisors (4856589).

13898931 is an equidigital number, since it uses as much as digits as its factorization.

13898931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55905.

The product of its digits is 46656, while the sum is 42.

The square root of 13898931 is about 3728.1270096390. The cubic root of 13898931 is about 240.4328473495.

The spelling of 13898931 in words is "thirteen million, eight hundred ninety-eight thousand, nine hundred thirty-one".