906808091 has 4 divisors (see below), whose sum is σ = 1036352112. Its totient is φ = 777264072.

The previous prime is 906808081. The next prime is 906808109. The reversal of 906808091 is 190808609.

906808091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 906808091 - 2¹⁰ = 906807067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (906808081) 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, 64772000 + ... + 64772013.

It is an arithmetic number, because the mean of its divisors is an integer number (259088028).

Almost surely, 2^906808091 is an apocalyptic number.

906808091 is a deficient number, since it is larger than the sum of its proper divisors (129544021).

906808091 is a wasteful number, since it uses less digits than its factorization.

906808091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129544020.

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 906808091 is about 30113.2544073204. The cubic root of 906808091 is about 967.9177677994.

The spelling of 906808091 in words is "nine hundred six million, eight hundred eight thousand, ninety-one".