84999867 has 4 divisors (see below), whose sum is σ = 113333160. Its totient is φ = 56666576.

The previous prime is 84999833. The next prime is 84999907. The reversal of 84999867 is 76899948.

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 84999867 - 2⁸ = 84999611 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84999867.

It is not an unprimeable number, because it can be changed into a prime (84999367) 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, 14166642 + ... + 14166647.

It is an arithmetic number, because the mean of its divisors is an integer number (28333290).

Almost surely, 2^84999867 is an apocalyptic number.

84999867 is a deficient number, since it is larger than the sum of its proper divisors (28333293).

84999867 is a wasteful number, since it uses less digits than its factorization.

84999867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28333292.

The product of its digits is 7838208, while the sum is 60.

The square root of 84999867 is about 9219.5372443523. The cubic root of 84999867 is about 439.6827378909.

The spelling of 84999867 in words is "eighty-four million, nine hundred ninety-nine thousand, eight hundred sixty-seven".