84985899 has 4 divisors (see below), whose sum is σ = 113314536. Its totient is φ = 56657264.

The previous prime is 84985891. The next prime is 84985913. The reversal of 84985899 is 99858948.

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 84985899 - 2³ = 84985891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84985891) 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, 14164314 + ... + 14164319.

It is an arithmetic number, because the mean of its divisors is an integer number (28328634).

Almost surely, 2^84985899 is an apocalyptic number.

84985899 is a deficient number, since it is larger than the sum of its proper divisors (28328637).

84985899 is a wasteful number, since it uses less digits than its factorization.

84985899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28328636.

The product of its digits is 7464960, while the sum is 60.

The square root of 84985899 is about 9218.7796914776. The cubic root of 84985899 is about 439.6586522652.

The spelling of 84985899 in words is "eighty-four million, nine hundred eighty-five thousand, eight hundred ninety-nine".