7890993 has 24 divisors (see below), whose sum is σ = 12831840. Its totient is φ = 4753080.

The previous prime is 7890991. The next prime is 7890997. The reversal of 7890993 is 3990987.

It is a happy number.

7890993 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7890993 - 2¹ = 7890991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7890991) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48330 + ... + 48492.

It is an arithmetic number, because the mean of its divisors is an integer number (534660).

Almost surely, 2^7890993 is an apocalyptic number.

It is an amenable number.

7890993 is a deficient number, since it is larger than the sum of its proper divisors (4940847).

7890993 is a wasteful number, since it uses less digits than its factorization.

7890993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 7890993 is about 2809.0911341571. The cubic root of 7890993 is about 199.0874509371.

The spelling of 7890993 in words is "seven million, eight hundred ninety thousand, nine hundred ninety-three".