928440569 has 4 divisors (see below), whose sum is σ = 1061074944. Its totient is φ = 795806196.

The previous prime is 928440559. The next prime is 928440571. The reversal of 928440569 is 965044829.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 928440569 - 2⁴ = 928440553 is a prime.

It is a super-2 number, since 2×928440569² = 1724003780330087522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (928440559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66317177 + ... + 66317190.

It is an arithmetic number, because the mean of its divisors is an integer number (265268736).

Almost surely, 2^928440569 is an apocalyptic number.

It is an amenable number.

928440569 is a deficient number, since it is larger than the sum of its proper divisors (132634375).

928440569 is a wasteful number, since it uses less digits than its factorization.

928440569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132634374.

The product of its (nonzero) digits is 622080, while the sum is 47.

The square root of 928440569 is about 30470.3227583825. The cubic root of 928440569 is about 975.5541251615.

The spelling of 928440569 in words is "nine hundred twenty-eight million, four hundred forty thousand, five hundred sixty-nine".