13923149 has 4 divisors (see below), whose sum is σ = 14262780. Its totient is φ = 13583520.

The previous prime is 13923127. The next prime is 13923163. The reversal of 13923149 is 94132931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94132931 = 367 ⋅256493.

It can be written as a sum of positive squares in 2 ways, for example, as 366025 + 13557124 = 605^2 + 3682^2 .

It is a cyclic number.

It is not a de Polignac number, because 13923149 - 2²⁰ = 12874573 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 (13923109) 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, 169754 + ... + 169835.

It is an arithmetic number, because the mean of its divisors is an integer number (3565695).

Almost surely, 2^13923149 is an apocalyptic number.

It is an amenable number.

13923149 is a deficient number, since it is larger than the sum of its proper divisors (339631).

13923149 is an equidigital number, since it uses as much as digits as its factorization.

13923149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339630.

The product of its digits is 5832, while the sum is 32.

The square root of 13923149 is about 3731.3736076678. The cubic root of 13923149 is about 240.5724126156.

The spelling of 13923149 in words is "thirteen million, nine hundred twenty-three thousand, one hundred forty-nine".