7894393 has 4 divisors (see below), whose sum is σ = 8501668. Its totient is φ = 7287120.

The previous prime is 7894387. The next prime is 7894417. The reversal of 7894393 is 3934987.

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 2732409 + 5161984 = 1653^2 + 2272^2 .

It is a cyclic number.

It is not a de Polignac number, because 7894393 - 2²¹ = 5797241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7894303) 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, 303618 + ... + 303643.

It is an arithmetic number, because the mean of its divisors is an integer number (2125417).

Almost surely, 2^7894393 is an apocalyptic number.

It is an amenable number.

7894393 is a deficient number, since it is larger than the sum of its proper divisors (607275).

7894393 is a wasteful number, since it uses less digits than its factorization.

7894393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607274.

The product of its digits is 163296, while the sum is 43.

The square root of 7894393 is about 2809.6962469278. The cubic root of 7894393 is about 199.1160405006.

The spelling of 7894393 in words is "seven million, eight hundred ninety-four thousand, three hundred ninety-three".