108399858 has 48 divisors (see below), whose sum is σ = 253227744. Its totient is φ = 30844800.

The previous prime is 108399847. The next prime is 108399911. The reversal of 108399858 is 858993801.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 108399858.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89658 + ... + 90858.

It is an arithmetic number, because the mean of its divisors is an integer number (5275578).

Almost surely, 2^108399858 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 108399858, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126613872).

108399858 is an abundant number, since it is smaller than the sum of its proper divisors (144827886).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

108399858 is a wasteful number, since it uses less digits than its factorization.

108399858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527 (or 1520 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 51.

The square root of 108399858 is about 10411.5252484927. The cubic root of 108399858 is about 476.8073093607.

The spelling of 108399858 in words is "one hundred eight million, three hundred ninety-nine thousand, eight hundred fifty-eight".