527238989 has 2 divisors, whose sum is σ = 527238990. Its totient is φ = 527238988.

The previous prime is 527238983. The next prime is 527239001. The reversal of 527238989 is 989832725.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 304781764 + 222457225 = 17458^2 + 14915^2 .

It is a cyclic number.

It is not a de Polignac number, because 527238989 - 2⁴ = 527238973 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 527238989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (527238983) 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 as a sum of consecutive naturals, namely, 263619494 + 263619495.

It is an arithmetic number, because the mean of its divisors is an integer number (263619495).

Almost surely, 2^527238989 is an apocalyptic number.

It is an amenable number.

527238989 is a deficient number, since it is larger than the sum of its proper divisors (1).

527238989 is an equidigital number, since it uses as much as digits as its factorization.

527238989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 53.

The square root of 527238989 is about 22961.6852386753. The cubic root of 527238989 is about 807.8595057860.

The spelling of 527238989 in words is "five hundred twenty-seven million, two hundred thirty-eight thousand, nine hundred eighty-nine".