84445423 has 2 divisors, whose sum is σ = 84445424. Its totient is φ = 84445422.

The previous prime is 84445379. The next prime is 84445447. The reversal of 84445423 is 32454448.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84445423 - 2²¹ = 82348271 is a prime.

It is a super-3 number, since 3×84445423³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84445463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42222711 + 42222712.

It is an arithmetic number, because the mean of its divisors is an integer number (42222712).

Almost surely, 2^84445423 is an apocalyptic number.

84445423 is a deficient number, since it is larger than the sum of its proper divisors (1).

84445423 is an equidigital number, since it uses as much as digits as its factorization.

84445423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61440, while the sum is 34.

The square root of 84445423 is about 9189.4190784837. The cubic root of 84445423 is about 438.7246523398.

The spelling of 84445423 in words is "eighty-four million, four hundred forty-five thousand, four hundred twenty-three".