13807445 has 4 divisors (see below), whose sum is σ = 16568940. Its totient is φ = 11045952.

The previous prime is 13807421. The next prime is 13807463. The reversal of 13807445 is 54470831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54470831 = 23 ⋅2368297.

It can be written as a sum of positive squares in 2 ways, for example, as 2531281 + 11276164 = 1591^2 + 3358^2 .

It is a cyclic number.

It is not a de Polignac number, because 13807445 - 2¹⁴ = 13791061 is a prime.

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, 1380740 + ... + 1380749.

It is an arithmetic number, because the mean of its divisors is an integer number (4142235).

Almost surely, 2^13807445 is an apocalyptic number.

It is an amenable number.

13807445 is a deficient number, since it is larger than the sum of its proper divisors (2761495).

13807445 is an equidigital number, since it uses as much as digits as its factorization.

13807445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2761494.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 13807445 is about 3715.8370524015. The cubic root of 13807445 is about 239.9041573327.

The spelling of 13807445 in words is "thirteen million, eight hundred seven thousand, four hundred forty-five".