567898989 has 16 divisors (see below), whose sum is σ = 866440320. Its totient is φ = 324112320.

The previous prime is 567898931. The next prime is 567898997. The reversal of 567898989 is 989898765.

567898989 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 567898989 - 2¹² = 567894893 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (567398989) 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 15 ways as a sum of consecutive naturals, for example, 1099 + ... + 33719.

It is an arithmetic number, because the mean of its divisors is an integer number (54152520).

Almost surely, 2^567898989 is an apocalyptic number.

It is an amenable number.

567898989 is a deficient number, since it is larger than the sum of its proper divisors (298541331).

567898989 is a wasteful number, since it uses less digits than its factorization.

567898989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33460.

The product of its digits is 78382080, while the sum is 69.

The square root of 567898989 is about 23830.6313176970. The cubic root of 567898989 is about 828.1144544692.

The spelling of 567898989 in words is "five hundred sixty-seven million, eight hundred ninety-eight thousand, nine hundred eighty-nine".