8244919521 has 12 divisors (see below), whose sum is σ = 11910122640. Its totient is φ = 5496246360.

The previous prime is 8244919499. The next prime is 8244919577. The reversal of 8244919521 is 1259194428.

It is a happy number.

8244919521 is a `hidden beast` number, since 82 + 4 + 49 + 1 + 9 + 521 = 666.

It is not a de Polignac number, because 8244919521 - 2²² = 8240725217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8244919021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 219970 + ... + 254708.

It is an arithmetic number, because the mean of its divisors is an integer number (992510220).

Almost surely, 2^8244919521 is an apocalyptic number.

It is an amenable number.

8244919521 is a deficient number, since it is larger than the sum of its proper divisors (3665203119).

8244919521 is a wasteful number, since it uses less digits than its factorization.

8244919521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61116 (or 61113 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 8244919521 is about 90801.5391995092. The cubic root of 8244919521 is about 2020.2051486742.

The spelling of 8244919521 in words is "eight billion, two hundred forty-four million, nine hundred nineteen thousand, five hundred twenty-one".