13936445 has 4 divisors (see below), whose sum is σ = 16723740. Its totient is φ = 11149152.

The previous prime is 13936441. The next prime is 13936463. The reversal of 13936445 is 54463931.

It is a happy number.

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 5139289 + 8797156 = 2267^2 + 2966^2 .

It is a cyclic number.

It is not a de Polignac number, because 13936445 - 2² = 13936441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13936441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1393640 + ... + 1393649.

It is an arithmetic number, because the mean of its divisors is an integer number (4180935).

Almost surely, 2^13936445 is an apocalyptic number.

It is an amenable number.

13936445 is a deficient number, since it is larger than the sum of its proper divisors (2787295).

13936445 is an equidigital number, since it uses as much as digits as its factorization.

13936445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2787294.

The product of its digits is 38880, while the sum is 35.

The square root of 13936445 is about 3733.1548320422. The cubic root of 13936445 is about 240.6489669724.

The spelling of 13936445 in words is "thirteen million, nine hundred thirty-six thousand, four hundred forty-five".