8306993 has 4 divisors (see below), whose sum is σ = 8400420. Its totient is φ = 8213568.

The previous prime is 8306957. The next prime is 8307001. The reversal of 8306993 is 3996038.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3996038 = 2 ⋅1998019.

It can be written as a sum of positive squares in 2 ways, for example, as 2411809 + 5895184 = 1553^2 + 2428^2 .

It is a cyclic number.

It is not a de Polignac number, because 8306993 - 2²⁰ = 7258417 is a prime.

It is a super-2 number, since 2×8306993² = 138012265404098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8306293) 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, 46580 + ... + 46757.

It is an arithmetic number, because the mean of its divisors is an integer number (2100105).

Almost surely, 2^8306993 is an apocalyptic number.

It is an amenable number.

8306993 is a deficient number, since it is larger than the sum of its proper divisors (93427).

8306993 is an equidigital number, since it uses as much as digits as its factorization.

8306993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93426.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 8306993 is about 2882.1854555181. The cubic root of 8306993 is about 202.5262314238.

The spelling of 8306993 in words is "eight million, three hundred six thousand, nine hundred ninety-three".