9221657894 has 16 divisors (see below), whose sum is σ = 14012555040. Its totient is φ = 4551128640.

The previous prime is 9221657857. The next prime is 9221657899. The reversal of 9221657894 is 4987561229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9221657899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23087 + ... + 137754.

It is an arithmetic number, because the mean of its divisors is an integer number (875784690).

Almost surely, 2^9221657894 is an apocalyptic number.

9221657894 is a deficient number, since it is larger than the sum of its proper divisors (4790897146).

9221657894 is a wasteful number, since it uses less digits than its factorization.

9221657894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161215.

The product of its digits is 2177280, while the sum is 53.

The square root of 9221657894 is about 96029.4636765196. The cubic root of 9221657894 is about 2097.0220749639.

The spelling of 9221657894 in words is "nine billion, two hundred twenty-one million, six hundred fifty-seven thousand, eight hundred ninety-four".