13919149 has 4 divisors (see below), whose sum is σ = 14007964. Its totient is φ = 13830336.

The previous prime is 13919137. The next prime is 13919161. The reversal of 13919149 is 94191931.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (13919137) and next prime (13919161).

It can be written as a sum of positive squares in 2 ways, for example, as 5978025 + 7941124 = 2445^2 + 2818^2 .

It is a cyclic number.

It is not a de Polignac number, because 13919149 - 2¹⁵ = 13886381 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 (13919119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44172 + ... + 44485.

It is an arithmetic number, because the mean of its divisors is an integer number (3501991).

Almost surely, 2^13919149 is an apocalyptic number.

It is an amenable number.

13919149 is a deficient number, since it is larger than the sum of its proper divisors (88815).

13919149 is an equidigital number, since it uses as much as digits as its factorization.

13919149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88814.

The product of its digits is 8748, while the sum is 37.

The square root of 13919149 is about 3730.8375735215. The cubic root of 13919149 is about 240.5493722862.

The spelling of 13919149 in words is "thirteen million, nine hundred nineteen thousand, one hundred forty-nine".