13780793 has 4 divisors (see below), whose sum is σ = 14840868. Its totient is φ = 12720720.

The previous prime is 13780787. The next prime is 13780799. The reversal of 13780793 is 39708731.

It is a happy number.

13780793 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 an emirpimes, since its reverse is a distinct semiprime: 39708731 = 389 ⋅102079.

It is an interprime number because it is at equal distance from previous prime (13780787) and next prime (13780799).

It can be written as a sum of positive squares in 2 ways, for example, as 1926544 + 11854249 = 1388^2 + 3443^2 .

It is a cyclic number.

It is not a de Polignac number, because 13780793 - 2⁸ = 13780537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13780799) 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, 530018 + ... + 530043.

It is an arithmetic number, because the mean of its divisors is an integer number (3710217).

Almost surely, 2^13780793 is an apocalyptic number.

13780793 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13780793 is a deficient number, since it is larger than the sum of its proper divisors (1060075).

13780793 is a wasteful number, since it uses less digits than its factorization.

13780793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060074.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 13780793 is about 3712.2490487574. The cubic root of 13780793 is about 239.7496985364.

The spelling of 13780793 in words is "thirteen million, seven hundred eighty thousand, seven hundred ninety-three".