13147149 has 4 divisors (see below), whose sum is σ = 17529536. Its totient is φ = 8764764.

The previous prime is 13147133. The next prime is 13147157. The reversal of 13147149 is 94174131.

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 not a de Polignac number, because 13147149 - 2⁴ = 13147133 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 (13147109) 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, 2191189 + ... + 2191194.

It is an arithmetic number, because the mean of its divisors is an integer number (4382384).

Almost surely, 2^13147149 is an apocalyptic number.

It is an amenable number.

13147149 is a deficient number, since it is larger than the sum of its proper divisors (4382387).

13147149 is an equidigital number, since it uses as much as digits as its factorization.

13147149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4382386.

The product of its digits is 3024, while the sum is 30.

The square root of 13147149 is about 3625.8997504068. The cubic root of 13147149 is about 236.0173129595.

The spelling of 13147149 in words is "thirteen million, one hundred forty-seven thousand, one hundred forty-nine".