992120839 has 2 divisors, whose sum is σ = 992120840. Its totient is φ = 992120838.

The previous prime is 992120819. The next prime is 992120861. The reversal of 992120839 is 938021299.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 992120839 - 2¹³ = 992112647 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 992120795 and 992120804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (992120819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496060419 + 496060420.

It is an arithmetic number, because the mean of its divisors is an integer number (496060420).

Almost surely, 2^992120839 is an apocalyptic number.

992120839 is a deficient number, since it is larger than the sum of its proper divisors (1).

992120839 is an equidigital number, since it uses as much as digits as its factorization.

992120839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 992120839 is about 31497.9497586748. The cubic root of 992120839 is about 997.3666847375.

The spelling of 992120839 in words is "nine hundred ninety-two million, one hundred twenty thousand, eight hundred thirty-nine".