8403248321 has 8 divisors (see below), whose sum is σ = 9058928424. Its totient is φ = 7748893440.

The previous prime is 8403248263. The next prime is 8403248333. The reversal of 8403248321 is 1238423048.

It can be written as a sum of positive squares in 4 ways, for example, as 363436096 + 8039812225 = 19064^2 + 89665^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8403248321 is a prime.

It is a super-2 number, since 2×8403248321² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8403248221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318110 + ... + 343511.

It is an arithmetic number, because the mean of its divisors is an integer number (1132366053).

Almost surely, 2^8403248321 is an apocalyptic number.

It is an amenable number.

8403248321 is a deficient number, since it is larger than the sum of its proper divisors (655680103).

8403248321 is a wasteful number, since it uses less digits than its factorization.

8403248321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662611.

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 8403248321 is about 91669.2332301302. The cubic root of 8403248321 is about 2033.0547101489.

The spelling of 8403248321 in words is "eight billion, four hundred three million, two hundred forty-eight thousand, three hundred twenty-one".