13776149 has 4 divisors (see below), whose sum is σ = 14375136. Its totient is φ = 13177164.

The previous prime is 13776067. The next prime is 13776167. The reversal of 13776149 is 94167731.

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, and also an emirpimes, since its reverse is a distinct semiprime: 94167731 = 7 ⋅13452533.

It is a cyclic number.

It is not a de Polignac number, because 13776149 - 2²⁰ = 12727573 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 (13776649) 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 3 ways as a sum of consecutive naturals, for example, 299459 + ... + 299504.

It is an arithmetic number, because the mean of its divisors is an integer number (3593784).

Almost surely, 2^13776149 is an apocalyptic number.

It is an amenable number.

13776149 is a deficient number, since it is larger than the sum of its proper divisors (598987).

13776149 is an equidigital number, since it uses as much as digits as its factorization.

13776149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598986.

The product of its digits is 31752, while the sum is 38.

The square root of 13776149 is about 3711.6234992251. The cubic root of 13776149 is about 239.7227643657.

The spelling of 13776149 in words is "thirteen million, seven hundred seventy-six thousand, one hundred forty-nine".