13923145 has 4 divisors (see below), whose sum is σ = 16707780. Its totient is φ = 11138512.

The previous prime is 13923127. The next prime is 13923163. The reversal of 13923145 is 54132931.

13923145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54132931 = 73 ⋅741547.

It is an interprime number because it is at equal distance from previous prime (13923127) and next prime (13923163).

It can be written as a sum of positive squares in 2 ways, for example, as 3606201 + 10316944 = 1899^2 + 3212^2 .

It is a cyclic number.

It is not a de Polignac number, because 13923145 - 2⁵ = 13923113 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1392310 + ... + 1392319.

It is an arithmetic number, because the mean of its divisors is an integer number (4176945).

Almost surely, 2^13923145 is an apocalyptic number.

It is an amenable number.

13923145 is a deficient number, since it is larger than the sum of its proper divisors (2784635).

13923145 is an equidigital number, since it uses as much as digits as its factorization.

13923145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2784634.

The product of its digits is 3240, while the sum is 28.

The square root of 13923145 is about 3731.3730716721. The cubic root of 13923145 is about 240.5723895775.

The spelling of 13923145 in words is "thirteen million, nine hundred twenty-three thousand, one hundred forty-five".