13385945 has 8 divisors (see below), whose sum is σ = 16366536. Its totient is φ = 10506496.

The previous prime is 13385941. The next prime is 13385947. The reversal of 13385945 is 54958331.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5607424 + 7778521 = 2368^2 + 2789^2 .

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 13385945 - 2² = 13385941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13385899 and 13385908.

It is not an unprimeable number, because it can be changed into a prime (13385941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24992 + ... + 25521.

It is an arithmetic number, because the mean of its divisors is an integer number (2045817).

Almost surely, 2^13385945 is an apocalyptic number.

It is an amenable number.

13385945 is a deficient number, since it is larger than the sum of its proper divisors (2980591).

13385945 is an equidigital number, since it uses as much as digits as its factorization.

13385945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50571.

The product of its digits is 64800, while the sum is 38.

The square root of 13385945 is about 3658.6807731749. The cubic root of 13385945 is about 237.4377011113.

The spelling of 13385945 in words is "thirteen million, three hundred eighty-five thousand, nine hundred forty-five".