7894993 has 2 divisors, whose sum is σ = 7894994. Its totient is φ = 7894992.

The previous prime is 7894981. The next prime is 7895009. The reversal of 7894993 is 3994987.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7573504 + 321489 = 2752^2 + 567^2 .

It is a cyclic number.

It is not a de Polignac number, because 7894993 - 2⁵ = 7894961 is a prime.

It is not a weakly prime, because it can be changed into another prime (7894973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3947496 + 3947497.

It is an arithmetic number, because the mean of its divisors is an integer number (3947497).

Almost surely, 2^7894993 is an apocalyptic number.

It is an amenable number.

7894993 is a deficient number, since it is larger than the sum of its proper divisors (1).

7894993 is an equidigital number, since it uses as much as digits as its factorization.

7894993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888, while the sum is 49.

The square root of 7894993 is about 2809.8030180068. The cubic root of 7894993 is about 199.1210848656.

The spelling of 7894993 in words is "seven million, eight hundred ninety-four thousand, nine hundred ninety-three".