942087689 has 2 divisors, whose sum is σ = 942087690. Its totient is φ = 942087688.

The previous prime is 942087683. The next prime is 942087733. The reversal of 942087689 is 986780249.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 872198089 + 69889600 = 29533^2 + 8360^2 .

It is a cyclic number.

It is not a de Polignac number, because 942087689 - 2²⁴ = 925310473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 942087689.

It is not a weakly prime, because it can be changed into another prime (942087683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 471043844 + 471043845.

It is an arithmetic number, because the mean of its divisors is an integer number (471043845).

Almost surely, 2^942087689 is an apocalyptic number.

It is an amenable number.

942087689 is a deficient number, since it is larger than the sum of its proper divisors (1).

942087689 is an equidigital number, since it uses as much as digits as its factorization.

942087689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The square root of 942087689 is about 30693.4470042060. The cubic root of 942087689 is about 980.3107750318.

The spelling of 942087689 in words is "nine hundred forty-two million, eighty-seven thousand, six hundred eighty-nine".