992394889 has 2 divisors, whose sum is σ = 992394890. Its totient is φ = 992394888.

The previous prime is 992394883. The next prime is 992394913. The reversal of 992394889 is 988493299.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 773118025 + 219276864 = 27805^2 + 14808^2 .

It is an emirp because it is prime and its reverse (988493299) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 992394889 - 2²⁹ = 455523977 is a prime.

It is not a weakly prime, because it can be changed into another prime (992394883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496197444 + 496197445.

It is an arithmetic number, because the mean of its divisors is an integer number (496197445).

Almost surely, 2^992394889 is an apocalyptic number.

It is an amenable number.

992394889 is a deficient number, since it is larger than the sum of its proper divisors (1).

992394889 is an equidigital number, since it uses as much as digits as its factorization.

992394889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10077696, while the sum is 61.

The square root of 992394889 is about 31502.2997414474. The cubic root of 992394889 is about 997.4585092970.

The spelling of 992394889 in words is "nine hundred ninety-two million, three hundred ninety-four thousand, eight hundred eighty-nine".