906805089 has 24 divisors (see below), whose sum is σ = 1356600960. Its totient is φ = 582999648.

The previous prime is 906805079. The next prime is 906805091. The reversal of 906805089 is 980508609.

It is not a de Polignac number, because 906805089 - 2⁷ = 906804961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (906805049) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 308344 + ... + 311270.

It is an arithmetic number, because the mean of its divisors is an integer number (56525040).

Almost surely, 2^906805089 is an apocalyptic number.

It is an amenable number.

906805089 is a deficient number, since it is larger than the sum of its proper divisors (449795871).

906805089 is a wasteful number, since it uses less digits than its factorization.

906805089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4149 (or 4146 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 906805089 is about 30113.2045621186. The cubic root of 906805089 is about 967.9166996967.

The spelling of 906805089 in words is "nine hundred six million, eight hundred five thousand, eighty-nine".