992213771 has 2 divisors, whose sum is σ = 992213772. Its totient is φ = 992213770.

The previous prime is 992213707. The next prime is 992213773. The reversal of 992213771 is 177312299.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 992213771 - 2⁶ = 992213707 is a prime.

Together with 992213773, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (992213773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496106885 + 496106886.

It is an arithmetic number, because the mean of its divisors is an integer number (496106886).

Almost surely, 2^992213771 is an apocalyptic number.

992213771 is a deficient number, since it is larger than the sum of its proper divisors (1).

992213771 is an equidigital number, since it uses as much as digits as its factorization.

992213771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47628, while the sum is 41.

The square root of 992213771 is about 31499.4249312587. The cubic root of 992213771 is about 997.3978248914.

The spelling of 992213771 in words is "nine hundred ninety-two million, two hundred thirteen thousand, seven hundred seventy-one".