7999322213 has 8 divisors (see below), whose sum is σ = 8303412600. Its totient is φ = 7697115328.

The previous prime is 7999322161. The next prime is 7999322251. The reversal of 7999322213 is 3122239997.

It can be written as a sum of positive squares in 4 ways, for example, as 6015243364 + 1984078849 = 77558^2 + 44543^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7999322213 - 2²² = 7995127909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7999322713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462218 + ... + 479211.

It is an arithmetic number, because the mean of its divisors is an integer number (1037926575).

Almost surely, 2^7999322213 is an apocalyptic number.

It is an amenable number.

7999322213 is a deficient number, since it is larger than the sum of its proper divisors (304090387).

7999322213 is a wasteful number, since it uses less digits than its factorization.

7999322213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941751.

The product of its digits is 367416, while the sum is 47.

The square root of 7999322213 is about 89438.9300752195. The cubic root of 7999322213 is about 1999.9435161548.

The spelling of 7999322213 in words is "seven billion, nine hundred ninety-nine million, three hundred twenty-two thousand, two hundred thirteen".