8449373421 has 12 divisors (see below), whose sum is σ = 12411509760. Its totient is φ = 5537442120.

The previous prime is 8449373351. The next prime is 8449373431. The reversal of 8449373421 is 1243739448.

It is not a de Polignac number, because 8449373421 - 2¹⁰ = 8449372397 is a prime.

It is a super-2 number, since 2×8449373421² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8449373431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7955565 + ... + 7956626.

It is an arithmetic number, because the mean of its divisors is an integer number (1034292480).

Almost surely, 2^8449373421 is an apocalyptic number.

It is an amenable number.

8449373421 is a deficient number, since it is larger than the sum of its proper divisors (3962136339).

8449373421 is a wasteful number, since it uses less digits than its factorization.

8449373421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15912256 (or 15912253 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 8449373421 is about 91920.4733506089. The cubic root of 8449373421 is about 2036.7677107269.

The spelling of 8449373421 in words is "eight billion, four hundred forty-nine million, three hundred seventy-three thousand, four hundred twenty-one".