84571399 has 4 divisors (see below), whose sum is σ = 92259720. Its totient is φ = 76883080.

The previous prime is 84571393. The next prime is 84571423. The reversal of 84571399 is 99317548.

It is a happy number.

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 84571399 - 2¹¹ = 84569351 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 (84571393) 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, 3844144 + ... + 3844165.

It is an arithmetic number, because the mean of its divisors is an integer number (23064930).

Almost surely, 2^84571399 is an apocalyptic number.

84571399 is a deficient number, since it is larger than the sum of its proper divisors (7688321).

84571399 is a wasteful number, since it uses less digits than its factorization.

84571399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7688320.

The product of its digits is 272160, while the sum is 46.

The square root of 84571399 is about 9196.2709290234. The cubic root of 84571399 is about 438.9427076400.

The spelling of 84571399 in words is "eighty-four million, five hundred seventy-one thousand, three hundred ninety-nine".