9221657087 has 4 divisors (see below), whose sum is σ = 9707007480. Its totient is φ = 8736306696.

The previous prime is 9221657083. The next prime is 9221657101. The reversal of 9221657087 is 7807561229.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7807561229 = 13 ⋅600581633.

It is a cyclic number.

It is not a de Polignac number, because 9221657087 - 2² = 9221657083 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9221657083) 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, 242675168 + ... + 242675205.

It is an arithmetic number, because the mean of its divisors is an integer number (2426751870).

Almost surely, 2^9221657087 is an apocalyptic number.

9221657087 is a deficient number, since it is larger than the sum of its proper divisors (485350393).

9221657087 is a wasteful number, since it uses less digits than its factorization.

9221657087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485350392.

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 9221657087 is about 96029.4594746841. The cubic root of 9221657087 is about 2097.0220137928.

The spelling of 9221657087 in words is "nine billion, two hundred twenty-one million, six hundred fifty-seven thousand, eighty-seven".