992509939 has 2 divisors, whose sum is σ = 992509940. Its totient is φ = 992509938.

The previous prime is 992509909. The next prime is 992510017. The reversal of 992509939 is 939905299.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 992509939 - 2⁵ = 992509907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 992509939.

It is not a weakly prime, because it can be changed into another prime (992509909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496254969 + 496254970.

It is an arithmetic number, because the mean of its divisors is an integer number (496254970).

Almost surely, 2^992509939 is an apocalyptic number.

992509939 is a deficient number, since it is larger than the sum of its proper divisors (1).

992509939 is an equidigital number, since it uses as much as digits as its factorization.

992509939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1771470, while the sum is 55.

The square root of 992509939 is about 31504.1257456861. The cubic root of 992509939 is about 997.4970534855.

The spelling of 992509939 in words is "nine hundred ninety-two million, five hundred nine thousand, nine hundred thirty-nine".