13440793 has 4 divisors (see below), whose sum is σ = 13449268. Its totient is φ = 13432320.

The previous prime is 13440781. The next prime is 13440821. The reversal of 13440793 is 39704431.

13440793 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 39704431 = 13 ⋅3054187.

It can be written as a sum of positive squares in 2 ways, for example, as 994009 + 12446784 = 997^2 + 3528^2 .

It is a cyclic number.

It is not a de Polignac number, because 13440793 - 2⁹ = 13440281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13440293) 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, 1068 + ... + 5293.

It is an arithmetic number, because the mean of its divisors is an integer number (3362317).

Almost surely, 2^13440793 is an apocalyptic number.

It is an amenable number.

13440793 is a deficient number, since it is larger than the sum of its proper divisors (8475).

13440793 is an equidigital number, since it uses as much as digits as its factorization.

13440793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8474.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 13440793 is about 3666.1687086112. The cubic root of 13440793 is about 237.7615541397.

The spelling of 13440793 in words is "thirteen million, four hundred forty thousand, seven hundred ninety-three".