86855998 has 4 divisors (see below), whose sum is σ = 130284000. Its totient is φ = 43427998.

The previous prime is 86855987. The next prime is 86856023. The reversal of 86855998 is 89955868.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21713998 + ... + 21714001.

It is an arithmetic number, because the mean of its divisors is an integer number (32571000).

Almost surely, 2^86855998 is an apocalyptic number.

86855998 is a deficient number, since it is larger than the sum of its proper divisors (43428002).

86855998 is a wasteful number, since it uses less digits than its factorization.

86855998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43428001.

The product of its digits is 6220800, while the sum is 58.

The square root of 86855998 is about 9319.6565387357. The cubic root of 86855998 is about 442.8601521722.

The spelling of 86855998 in words is "eighty-six million, eight hundred fifty-five thousand, nine hundred ninety-eight".