930809891 has 16 divisors (see below), whose sum is σ = 1088131968. Its totient is φ = 786806400.

The previous prime is 930809881. The next prime is 930809909. The reversal of 930809891 is 198908039.

930809891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 930809891 - 2¹⁸ = 930547747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (930809821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14465 + ... + 45506.

It is an arithmetic number, because the mean of its divisors is an integer number (68008248).

Almost surely, 2^930809891 is an apocalyptic number.

930809891 is a deficient number, since it is larger than the sum of its proper divisors (157322077).

930809891 is a wasteful number, since it uses less digits than its factorization.

930809891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60082.

The product of its (nonzero) digits is 139968, while the sum is 47.

The square root of 930809891 is about 30509.1771603234. The cubic root of 930809891 is about 976.3832711965.

The spelling of 930809891 in words is "nine hundred thirty million, eight hundred nine thousand, eight hundred ninety-one".