84023447 has 4 divisors (see below), whose sum is σ = 84081000. Its totient is φ = 83965896.

The previous prime is 84023441. The next prime is 84023449. The reversal of 84023447 is 74432048.

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 84023447 - 2¹⁰ = 84022423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84023441) 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, 26528 + ... + 29525.

It is an arithmetic number, because the mean of its divisors is an integer number (21020250).

Almost surely, 2^84023447 is an apocalyptic number.

84023447 is a deficient number, since it is larger than the sum of its proper divisors (57553).

84023447 is a wasteful number, since it uses less digits than its factorization.

84023447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57552.

The product of its (nonzero) digits is 21504, while the sum is 32.

The square root of 84023447 is about 9166.4304393804. The cubic root of 84023447 is about 437.9926588429.

The spelling of 84023447 in words is "eighty-four million, twenty-three thousand, four hundred forty-seven".