928491289 has 16 divisors (see below), whose sum is σ = 1073399040. Its totient is φ = 795088000.

The previous prime is 928491241. The next prime is 928491313. The reversal of 928491289 is 982194829.

It is a cyclic number.

It is not a de Polignac number, because 928491289 - 2¹¹ = 928489241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (928491229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22417 + ... + 48574.

It is an arithmetic number, because the mean of its divisors is an integer number (67087440).

Almost surely, 2^928491289 is an apocalyptic number.

It is an amenable number.

928491289 is a deficient number, since it is larger than the sum of its proper divisors (144907751).

928491289 is a wasteful number, since it uses less digits than its factorization.

928491289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71072.

The product of its digits is 746496, while the sum is 52.

The square root of 928491289 is about 30471.1550322596. The cubic root of 928491289 is about 975.5718894305.

The spelling of 928491289 in words is "nine hundred twenty-eight million, four hundred ninety-one thousand, two hundred eighty-nine".