920806386 has 32 divisors (see below), whose sum is σ = 1983632640. Its totient is φ = 284017104.

The previous prime is 920806373. The next prime is 920806391. The reversal of 920806386 is 683608029.

It is a super-3 number, since 3×920806386³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

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, 89020 + ... + 98823.

It is an arithmetic number, because the mean of its divisors is an integer number (61988520).

Almost surely, 2^920806386 is an apocalyptic number.

920806386 is an abundant number, since it is smaller than the sum of its proper divisors (1062826254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

920806386 is a wasteful number, since it uses less digits than its factorization.

920806386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187910.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 920806386 is about 30344.7917442186. The cubic root of 920806386 is about 972.8729033862.

The spelling of 920806386 in words is "nine hundred twenty million, eight hundred six thousand, three hundred eighty-six".