13999149 has 10 divisors (see below), whose sum is σ = 20912430. Its totient is φ = 9332712.

The previous prime is 13999147. The next prime is 13999159. The reversal of 13999149 is 94199931.

It can be written as a sum of positive squares in only one way, i.e., 7784100 + 6215049 = 2790^2 + 2493^2 .

It is not a de Polignac number, because 13999149 - 2¹ = 13999147 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13999147) 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 9 ways as a sum of consecutive naturals, for example, 86334 + ... + 86495.

It is an arithmetic number, because the mean of its divisors is an integer number (2091243).

Almost surely, 2^13999149 is an apocalyptic number.

It is an amenable number.

13999149 is a deficient number, since it is larger than the sum of its proper divisors (6913281).

13999149 is an equidigital number, since it uses as much as digits as its factorization.

13999149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172841 (or 172832 counting only the distinct ones).

The product of its digits is 78732, while the sum is 45.

The square root of 13999149 is about 3741.5436653873. The cubic root of 13999149 is about 241.0093429113.

The spelling of 13999149 in words is "thirteen million, nine hundred ninety-nine thousand, one hundred forty-nine".