445386858 has 128 divisors (see below), whose sum is σ = 1114767360. Its totient is φ = 115853760.

The previous prime is 445386839. The next prime is 445386869. The reversal of 445386858 is 858683544.

It is a happy number.

It is a super-2 number, since 2×445386858² = 396738906558224328, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 445386858.

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 63 ways as a sum of consecutive naturals, for example, 3204153 + ... + 3204291.

It is an arithmetic number, because the mean of its divisors is an integer number (8709120).

Almost surely, 2^445386858 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 445386858, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (557383680).

445386858 is an abundant number, since it is smaller than the sum of its proper divisors (669380502).

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

445386858 is a wasteful number, since it uses less digits than its factorization.

445386858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312.

The product of its digits is 3686400, while the sum is 51.

The square root of 445386858 is about 21104.1905317404. The cubic root of 445386858 is about 763.6818446757.

The spelling of 445386858 in words is "four hundred forty-five million, three hundred eighty-six thousand, eight hundred fifty-eight".