84989995 has 4 divisors (see below), whose sum is σ = 101988000. Its totient is φ = 67991992.

The previous prime is 84989929. The next prime is 84990001. The reversal of 84989995 is 59998948.

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 84989995 - 2⁷ = 84989867 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8498995 + ... + 8499004.

It is an arithmetic number, because the mean of its divisors is an integer number (25497000).

Almost surely, 2^84989995 is an apocalyptic number.

84989995 is a deficient number, since it is larger than the sum of its proper divisors (16998005).

84989995 is a wasteful number, since it uses less digits than its factorization.

84989995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16998004.

The product of its digits is 8398080, while the sum is 61.

The square root of 84989995 is about 9219.0018440176. The cubic root of 84989995 is about 439.6657154484.

The spelling of 84989995 in words is "eighty-four million, nine hundred eighty-nine thousand, nine hundred ninety-five".