8440043073 has 24 divisors (see below), whose sum is σ = 14280743520. Its totient is φ = 4384437120.

The previous prime is 8440043071. The next prime is 8440043107. The reversal of 8440043073 is 3703400448.

It is not a de Polignac number, because 8440043073 - 2¹ = 8440043071 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (8440043071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2608168 + ... + 2611401.

It is an arithmetic number, because the mean of its divisors is an integer number (595030980).

Almost surely, 2^8440043073 is an apocalyptic number.

It is an amenable number.

8440043073 is a deficient number, since it is larger than the sum of its proper divisors (5840700447).

8440043073 is a wasteful number, since it uses less digits than its factorization.

8440043073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5219597 (or 5219590 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 33.

The square root of 8440043073 is about 91869.7070475355. The cubic root of 8440043073 is about 2036.0177241128.

The spelling of 8440043073 in words is "eight billion, four hundred forty million, forty-three thousand, seventy-three".