13189961 has 4 divisors (see below), whose sum is σ = 13208832. Its totient is φ = 13171092.

The previous prime is 13189937. The next prime is 13189999. The reversal of 13189961 is 16998131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13189961 - 2¹⁴ = 13173577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13189901) 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, 8345 + ... + 9798.

It is an arithmetic number, because the mean of its divisors is an integer number (3302208).

Almost surely, 2^13189961 is an apocalyptic number.

It is an amenable number.

13189961 is a deficient number, since it is larger than the sum of its proper divisors (18871).

13189961 is an equidigital number, since it uses as much as digits as its factorization.

13189961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18870.

The product of its digits is 11664, while the sum is 38.

The square root of 13189961 is about 3631.7985902305. The cubic root of 13189961 is about 236.2732220578.

The spelling of 13189961 in words is "thirteen million, one hundred eighty-nine thousand, nine hundred sixty-one".