528309983 has 4 divisors (see below), whose sum is σ = 528455760. Its totient is φ = 528164208.

The previous prime is 528309973. The next prime is 528310001. The reversal of 528309983 is 389903825.

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

It is a cyclic number.

It is not a de Polignac number, because 528309983 - 2²⁶ = 461201119 is a prime.

It is a super-2 number, since 2×528309983² = 558222876274920578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (528309913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67310 + ... + 74747.

It is an arithmetic number, because the mean of its divisors is an integer number (132113940).

Almost surely, 2^528309983 is an apocalyptic number.

528309983 is a deficient number, since it is larger than the sum of its proper divisors (145777).

528309983 is a wasteful number, since it uses less digits than its factorization.

528309983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145776.

The product of its (nonzero) digits is 466560, while the sum is 47.

The square root of 528309983 is about 22984.9947356966. The cubic root of 528309983 is about 808.4061443559.

The spelling of 528309983 in words is "five hundred twenty-eight million, three hundred nine thousand, nine hundred eighty-three".