566149989 has 4 divisors (see below), whose sum is σ = 754866656. Its totient is φ = 377433324.

The previous prime is 566149979. The next prime is 566149999. The reversal of 566149989 is 989941665.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (566149979) and next prime (566149999).

It is not a de Polignac number, because 566149989 - 2⁵ = 566149957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (566149979) 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, 94358329 + ... + 94358334.

It is an arithmetic number, because the mean of its divisors is an integer number (188716664).

Almost surely, 2^566149989 is an apocalyptic number.

It is an amenable number.

566149989 is a deficient number, since it is larger than the sum of its proper divisors (188716667).

566149989 is a wasteful number, since it uses less digits than its factorization.

566149989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188716666.

The product of its digits is 4199040, while the sum is 57.

The square root of 566149989 is about 23793.9065518884. The cubic root of 566149989 is about 827.2634453731.

The spelling of 566149989 in words is "five hundred sixty-six million, one hundred forty-nine thousand, nine hundred eighty-nine".