528433889 has 4 divisors (see below), whose sum is σ = 542715924. Its totient is φ = 514151856.

The previous prime is 528433883. The next prime is 528433907. The reversal of 528433889 is 988334825.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 512569600 + 15864289 = 22640^2 + 3983^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-528433889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (528433883) 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, 7140962 + ... + 7141035.

It is an arithmetic number, because the mean of its divisors is an integer number (135678981).

Almost surely, 2^528433889 is an apocalyptic number.

It is an amenable number.

528433889 is a deficient number, since it is larger than the sum of its proper divisors (14282035).

528433889 is a wasteful number, since it uses less digits than its factorization.

528433889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14282034.

The product of its digits is 1658880, while the sum is 50.

The square root of 528433889 is about 22987.6899448379. The cubic root of 528433889 is about 808.4693386580.

The spelling of 528433889 in words is "five hundred twenty-eight million, four hundred thirty-three thousand, eight hundred eighty-nine".