7922813 has 2 divisors, whose sum is σ = 7922814. Its totient is φ = 7922812.

The previous prime is 7922809. The next prime is 7922821. The reversal of 7922813 is 3182297.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4919524 + 3003289 = 2218^2 + 1733^2 .

It is a cyclic number.

It is not a de Polignac number, because 7922813 - 2² = 7922809 is a prime.

It is equal to p₅₃₄₉₂₉ and since 7922813 and 534929 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7922813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7922113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3961406 + 3961407.

It is an arithmetic number, because the mean of its divisors is an integer number (3961407).

Almost surely, 2^7922813 is an apocalyptic number.

It is an amenable number.

7922813 is a deficient number, since it is larger than the sum of its proper divisors (1).

7922813 is an equidigital number, since it uses as much as digits as its factorization.

7922813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 32.

The square root of 7922813 is about 2814.7491895371. The cubic root of 7922813 is about 199.3546951475.

The spelling of 7922813 in words is "seven million, nine hundred twenty-two thousand, eight hundred thirteen".