920722894 has 16 divisors (see below), whose sum is σ = 1699796448. Its totient is φ = 364241952.

The previous prime is 920722879. The next prime is 920722921. The reversal of 920722894 is 498227029.

It is a self number, because there is not a number n which added to its sum of digits gives 920722894.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 2529277 + ... + 2529640.

It is an arithmetic number, because the mean of its divisors is an integer number (106237278).

Almost surely, 2^920722894 is an apocalyptic number.

920722894 is a deficient number, since it is larger than the sum of its proper divisors (779073554).

920722894 is a wasteful number, since it uses less digits than its factorization.

920722894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5058939.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 920722894 is about 30343.4159909526. The cubic root of 920722894 is about 972.8434981603.

The spelling of 920722894 in words is "nine hundred twenty million, seven hundred twenty-two thousand, eight hundred ninety-four".