84397893 has 4 divisors (see below), whose sum is σ = 112530528. Its totient is φ = 56265260.

The previous prime is 84397883. The next prime is 84397909. The reversal of 84397893 is 39879348.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84397893 - 2¹⁰ = 84396869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84397813) 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, 14066313 + ... + 14066318.

It is an arithmetic number, because the mean of its divisors is an integer number (28132632).

Almost surely, 2^84397893 is an apocalyptic number.

It is an amenable number.

84397893 is a deficient number, since it is larger than the sum of its proper divisors (28132635).

84397893 is a wasteful number, since it uses less digits than its factorization.

84397893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28132634.

The product of its digits is 1306368, while the sum is 51.

The square root of 84397893 is about 9186.8325880033. The cubic root of 84397893 is about 438.6423250193.

The spelling of 84397893 in words is "eighty-four million, three hundred ninety-seven thousand, eight hundred ninety-three".