8437982243 has 4 divisors (see below), whose sum is σ = 8438255280. Its totient is φ = 8437709208.

The previous prime is 8437982237. The next prime is 8437982297. The reversal of 8437982243 is 3422897348.

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

It is a cyclic number.

It is not a de Polignac number, because 8437982243 - 2¹⁸ = 8437720099 is a prime.

It is a super-2 number, since 2×8437982243² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8437982191 and 8437982200.

It is not an unprimeable number, because it can be changed into a prime (8437982143) 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, 83228 + ... + 154281.

It is an arithmetic number, because the mean of its divisors is an integer number (2109563820).

Almost surely, 2^8437982243 is an apocalyptic number.

8437982243 is a deficient number, since it is larger than the sum of its proper divisors (273037).

8437982243 is a wasteful number, since it uses less digits than its factorization.

8437982243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273036.

The product of its digits is 2322432, while the sum is 50.

The square root of 8437982243 is about 91858.4903152670. The cubic root of 8437982243 is about 2035.8519971560.

The spelling of 8437982243 in words is "eight billion, four hundred thirty-seven million, nine hundred eighty-two thousand, two hundred forty-three".