989839051 has 2 divisors, whose sum is σ = 989839052. Its totient is φ = 989839050.

The previous prime is 989838947. The next prime is 989839057. The reversal of 989839051 is 150938989.

It is a strong prime.

It is an emirp because it is prime and its reverse (150938989) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 989839051 - 2⁹ = 989838539 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 989839051.

It is not a weakly prime, because it can be changed into another prime (989839057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494919525 + 494919526.

It is an arithmetic number, because the mean of its divisors is an integer number (494919526).

Almost surely, 2^989839051 is an apocalyptic number.

989839051 is a deficient number, since it is larger than the sum of its proper divisors (1).

989839051 is an equidigital number, since it uses as much as digits as its factorization.

989839051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 699840, while the sum is 52.

The square root of 989839051 is about 31461.7076936393. The cubic root of 989839051 is about 996.6014801470.

The spelling of 989839051 in words is "nine hundred eighty-nine million, eight hundred thirty-nine thousand, fifty-one".