13923445 has 4 divisors (see below), whose sum is σ = 16708140. Its totient is φ = 11138752.

The previous prime is 13923439. The next prime is 13923457. The reversal of 13923445 is 54432931.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3073009 + 10850436 = 1753^2 + 3294^2 .

It is a cyclic number.

It is not a de Polignac number, because 13923445 - 2⁹ = 13922933 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 1392340 + ... + 1392349.

It is an arithmetic number, because the mean of its divisors is an integer number (4177035).

Almost surely, 2^13923445 is an apocalyptic number.

It is an amenable number.

13923445 is a deficient number, since it is larger than the sum of its proper divisors (2784695).

13923445 is an equidigital number, since it uses as much as digits as its factorization.

13923445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2784694.

The product of its digits is 12960, while the sum is 31.

The square root of 13923445 is about 3731.4132711347. The cubic root of 13923445 is about 240.5741174246.

The spelling of 13923445 in words is "thirteen million, nine hundred twenty-three thousand, four hundred forty-five".