929789989 has 6 divisors (see below), whose sum is σ = 951917766. Its totient is φ = 908165160.

The previous prime is 929789969. The next prime is 929790007. The reversal of 929789989 is 989987929.

It can be written as a sum of positive squares in only one way, i.e., 521345889 + 408444100 = 22833^2 + 20210^2 .

It is not a de Polignac number, because 929789989 - 2¹¹ = 929787941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (929789969) 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 in 5 ways as a sum of consecutive naturals, for example, 249582 + ... + 253279.

It is an arithmetic number, because the mean of its divisors is an integer number (158652961).

Almost surely, 2^929789989 is an apocalyptic number.

It is an amenable number.

929789989 is a deficient number, since it is larger than the sum of its proper divisors (22127777).

929789989 is an equidigital number, since it uses as much as digits as its factorization.

929789989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502947 (or 502904 counting only the distinct ones).

The product of its digits is 52907904, while the sum is 70.

The square root of 929789989 is about 30492.4579035538. The cubic root of 929789989 is about 976.0265283958.

The spelling of 929789989 in words is "nine hundred twenty-nine million, seven hundred eighty-nine thousand, nine hundred eighty-nine".