13919245 has 4 divisors (see below), whose sum is σ = 16703100. Its totient is φ = 11135392.

The previous prime is 13919233. The next prime is 13919251. The reversal of 13919245 is 54291931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54291931 = 17 ⋅3193643.

It can be written as a sum of positive squares in 2 ways, for example, as 8838729 + 5080516 = 2973^2 + 2254^2 .

It is a cyclic number.

It is not a de Polignac number, because 13919245 - 2²¹ = 11822093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13919245.

It is a congruent number.

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, 1391920 + ... + 1391929.

It is an arithmetic number, because the mean of its divisors is an integer number (4175775).

Almost surely, 2^13919245 is an apocalyptic number.

It is an amenable number.

13919245 is a deficient number, since it is larger than the sum of its proper divisors (2783855).

13919245 is an equidigital number, since it uses as much as digits as its factorization.

13919245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2783854.

The product of its digits is 9720, while the sum is 34.

The square root of 13919245 is about 3730.8504392430. The cubic root of 13919245 is about 240.5499253058.

The spelling of 13919245 in words is "thirteen million, nine hundred nineteen thousand, two hundred forty-five".