13923545 has 8 divisors (see below), whose sum is σ = 16815624. Its totient is φ = 11067264.

The previous prime is 13923541. The next prime is 13923571. The reversal of 13923545 is 54532931.

It can be written as a sum of positive squares in 4 ways, for example, as 2383936 + 11539609 = 1544^2 + 3397^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13923545 - 2² = 13923541 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13923541) 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 7 ways as a sum of consecutive naturals, for example, 8084 + ... + 9653.

It is an arithmetic number, because the mean of its divisors is an integer number (2101953).

Almost surely, 2^13923545 is an apocalyptic number.

It is an amenable number.

13923545 is a deficient number, since it is larger than the sum of its proper divisors (2892079).

13923545 is a wasteful number, since it uses less digits than its factorization.

13923545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17899.

The product of its digits is 16200, while the sum is 32.

The square root of 13923545 is about 3731.4266708593. The cubic root of 13923545 is about 240.5746933682.

The spelling of 13923545 in words is "thirteen million, nine hundred twenty-three thousand, five hundred forty-five".