71279443 has 6 divisors (see below), whose sum is σ = 73062092. Its totient is φ = 69539280.

The previous prime is 71279407. The next prime is 71279459. The reversal of 71279443 is 34497217.

It is a de Polignac number, because none of the positive numbers 2^k-71279443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71279473) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19521 + ... + 22882.

Almost surely, 2^71279443 is an apocalyptic number.

71279443 is a deficient number, since it is larger than the sum of its proper divisors (1782649).

71279443 is an equidigital number, since it uses as much as digits as its factorization.

71279443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42485 (or 42444 counting only the distinct ones).

The product of its digits is 42336, while the sum is 37.

The square root of 71279443 is about 8442.7153807291. The cubic root of 71279443 is about 414.6243138019.

The spelling of 71279443 in words is "seventy-one million, two hundred seventy-nine thousand, four hundred forty-three".