992120863 has 2 divisors, whose sum is σ = 992120864. Its totient is φ = 992120862.

The previous prime is 992120861. The next prime is 992120873. The reversal of 992120863 is 368021299.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 992120863 - 2¹ = 992120861 is a prime.

Together with 992120861, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (992120861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496060431 + 496060432.

It is an arithmetic number, because the mean of its divisors is an integer number (496060432).

Almost surely, 2^992120863 is an apocalyptic number.

992120863 is a deficient number, since it is larger than the sum of its proper divisors (1).

992120863 is an equidigital number, since it uses as much as digits as its factorization.

992120863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 992120863 is about 31497.9501396519. The cubic root of 992120863 is about 997.3666927798.

The spelling of 992120863 in words is "nine hundred ninety-two million, one hundred twenty thousand, eight hundred sixty-three".