922848721 has 4 divisors (see below), whose sum is σ = 923058612. Its totient is φ = 922638832.

The previous prime is 922848673. The next prime is 922848727. The reversal of 922848721 is 127848229.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 558802321 + 364046400 = 23639^2 + 19080^2 .

It is a cyclic number.

It is not a de Polignac number, because 922848721 - 2⁷ = 922848593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (922848727) 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, 98206 + ... + 107191.

It is an arithmetic number, because the mean of its divisors is an integer number (230764653).

Almost surely, 2^922848721 is an apocalyptic number.

It is an amenable number.

922848721 is a deficient number, since it is larger than the sum of its proper divisors (209891).

922848721 is a wasteful number, since it uses less digits than its factorization.

922848721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209890.

The product of its digits is 129024, while the sum is 43.

The square root of 922848721 is about 30378.4252554342. The cubic root of 922848721 is about 973.5916448514.

The spelling of 922848721 in words is "nine hundred twenty-two million, eight hundred forty-eight thousand, seven hundred twenty-one".