528380999 has 2 divisors, whose sum is σ = 528381000. Its totient is φ = 528380998.

The previous prime is 528380987. The next prime is 528381017. The reversal of 528380999 is 999083825.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-528380999 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 528380999.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (528380929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 264190499 + 264190500.

It is an arithmetic number, because the mean of its divisors is an integer number (264190500).

Almost surely, 2^528380999 is an apocalyptic number.

528380999 is a deficient number, since it is larger than the sum of its proper divisors (1).

528380999 is an equidigital number, since it uses as much as digits as its factorization.

528380999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1399680, while the sum is 53.

The square root of 528380999 is about 22986.5395177265. The cubic root of 528380999 is about 808.4423650095.

The spelling of 528380999 in words is "five hundred twenty-eight million, three hundred eighty thousand, nine hundred ninety-nine".