84165993 has 16 divisors (see below), whose sum is σ = 130112640. Its totient is φ = 53670672.

The previous prime is 84165967. The next prime is 84166051. The reversal of 84165993 is 39956148.

It is a happy number.

It is not a de Polignac number, because 84165993 - 2⁸ = 84165737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84165923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67146 + ... + 68387.

It is an arithmetic number, because the mean of its divisors is an integer number (8132040).

Almost surely, 2^84165993 is an apocalyptic number.

It is an amenable number.

84165993 is a deficient number, since it is larger than the sum of its proper divisors (45946647).

84165993 is a wasteful number, since it uses less digits than its factorization.

84165993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135565 (or 135559 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 84165993 is about 9174.2025811511. The cubic root of 84165993 is about 438.2402041432.

It can be divided in two parts, 84165 and 993, that added together give a palindrome (85158).

The spelling of 84165993 in words is "eighty-four million, one hundred sixty-five thousand, nine hundred ninety-three".