928985089 has 2 divisors, whose sum is σ = 928985090. Its totient is φ = 928985088.

The previous prime is 928985047. The next prime is 928985137. The reversal of 928985089 is 980589829.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 640494864 + 288490225 = 25308^2 + 16985^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-928985089 is a prime.

It is not a weakly prime, because it can be changed into another prime (928985039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 464492544 + 464492545.

It is an arithmetic number, because the mean of its divisors is an integer number (464492545).

Almost surely, 2^928985089 is an apocalyptic number.

It is an amenable number.

928985089 is a deficient number, since it is larger than the sum of its proper divisors (1).

928985089 is an equidigital number, since it uses as much as digits as its factorization.

928985089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3732480, while the sum is 58.

The square root of 928985089 is about 30479.2567002544. The cubic root of 928985089 is about 975.7448050802.

The spelling of 928985089 in words is "nine hundred twenty-eight million, nine hundred eighty-five thousand, eighty-nine".