928381569 has 8 divisors (see below), whose sum is σ = 1242248352. Its totient is φ = 616717920.

The previous prime is 928381561. The next prime is 928381603. The reversal of 928381569 is 965183829.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 928381569 - 2³ = 928381561 is a prime.

It is a super-2 number, since 2×928381569² = 1723784675317803522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (928381561) 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 7 ways as a sum of consecutive naturals, for example, 549799 + ... + 551484.

It is an arithmetic number, because the mean of its divisors is an integer number (155281044).

Almost surely, 2^928381569 is an apocalyptic number.

It is an amenable number.

928381569 is a deficient number, since it is larger than the sum of its proper divisors (313866783).

928381569 is a wasteful number, since it uses less digits than its factorization.

928381569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1101567.

The product of its digits is 933120, while the sum is 51.

The square root of 928381569 is about 30469.3545878478. The cubic root of 928381569 is about 975.5334600755.

The spelling of 928381569 in words is "nine hundred twenty-eight million, three hundred eighty-one thousand, five hundred sixty-nine".