84405443 has 2 divisors, whose sum is σ = 84405444. Its totient is φ = 84405442.

The previous prime is 84405413. The next prime is 84405449. The reversal of 84405443 is 34450448.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84405443 - 2¹² = 84401347 is a prime.

It is not a weakly prime, because it can be changed into another prime (84405449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42202721 + 42202722.

It is an arithmetic number, because the mean of its divisors is an integer number (42202722).

Almost surely, 2^84405443 is an apocalyptic number.

84405443 is a deficient number, since it is larger than the sum of its proper divisors (1).

84405443 is an equidigital number, since it uses as much as digits as its factorization.

84405443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30720, while the sum is 32.

The square root of 84405443 is about 9187.2434930179. The cubic root of 84405443 is about 438.6554045354.

It can be divided in two parts, 84405 and 443, that added together give a palindrome (84848).

The spelling of 84405443 in words is "eighty-four million, four hundred five thousand, four hundred forty-three".