992785879 has 2 divisors, whose sum is σ = 992785880. Its totient is φ = 992785878.

The previous prime is 992785847. The next prime is 992785897. The reversal of 992785879 is 978587299.

Together with next prime (992785897) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 992785879 - 2⁵ = 992785847 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 992785879.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (992785579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496392939 + 496392940.

It is an arithmetic number, because the mean of its divisors is an integer number (496392940).

Almost surely, 2^992785879 is an apocalyptic number.

992785879 is a deficient number, since it is larger than the sum of its proper divisors (1).

992785879 is an equidigital number, since it uses as much as digits as its factorization.

992785879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22861440, while the sum is 64.

The square root of 992785879 is about 31508.5048677337. The cubic root of 992785879 is about 997.5894870964.

The spelling of 992785879 in words is "nine hundred ninety-two million, seven hundred eighty-five thousand, eight hundred seventy-nine".