858490000 has 75 divisors (see below), whose sum is σ = 2085608173. Its totient is φ = 342224000.

The previous prime is 858489979. The next prime is 858490033. The reversal of 858490000 is 94858.

The square root of 858490000 is 29300.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 210482064 + 648007936 = 14508^2 + 25456^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 2929854 + ... + 2930146.

Almost surely, 2^858490000 is an apocalyptic number.

858490000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

858490000 is the 29300-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 858490000

858490000 is an abundant number, since it is smaller than the sum of its proper divisors (1227118173).

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

858490000 is an frugal number, since it uses more digits than its factorization.

858490000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614 (or 300 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The cubic root of 858490000 is about 950.4116406292.

The spelling of 858490000 in words is "eight hundred fifty-eight million, four hundred ninety thousand".