992189057 has 2 divisors, whose sum is σ = 992189058. Its totient is φ = 992189056.

The previous prime is 992189021. The next prime is 992189059. The reversal of 992189057 is 750981299.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 925619776 + 66569281 = 30424^2 + 8159^2 .

It is a cyclic number.

It is not a de Polignac number, because 992189057 - 2⁶ = 992188993 is a prime.

Together with 992189059, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 992188996 and 992189014.

It is not a weakly prime, because it can be changed into another prime (992189059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496094528 + 496094529.

It is an arithmetic number, because the mean of its divisors is an integer number (496094529).

Almost surely, 2^992189057 is an apocalyptic number.

It is an amenable number.

992189057 is a deficient number, since it is larger than the sum of its proper divisors (1).

992189057 is an equidigital number, since it uses as much as digits as its factorization.

992189057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 408240, while the sum is 50.

The square root of 992189057 is about 31499.0326359398. The cubic root of 992189057 is about 997.3895437813.

The spelling of 992189057 in words is "nine hundred ninety-two million, one hundred eighty-nine thousand, fifty-seven".