84366791 has 4 divisors (see below), whose sum is σ = 84577584. Its totient is φ = 84156000.

The previous prime is 84366787. The next prime is 84366797. The reversal of 84366791 is 19766348.

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 84366791 - 2² = 84366787 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 (84366797) 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, 104795 + ... + 105596.

It is an arithmetic number, because the mean of its divisors is an integer number (21144396).

Almost surely, 2^84366791 is an apocalyptic number.

84366791 is a deficient number, since it is larger than the sum of its proper divisors (210793).

84366791 is a wasteful number, since it uses less digits than its factorization.

84366791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210792.

The product of its digits is 217728, while the sum is 44.

The square root of 84366791 is about 9185.1396832057. The cubic root of 84366791 is about 438.5884361156.

The spelling of 84366791 in words is "eighty-four million, three hundred sixty-six thousand, seven hundred ninety-one".