858844074 has 64 divisors (see below), whose sum is σ = 1969482240. Its totient is φ = 247302720.

The previous prime is 858844073. The next prime is 858844087. The reversal of 858844074 is 470448858.

It is a super-2 number, since 2×858844074² = 1475226286889834952, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (858844073) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100917 + ... + 109095.

It is an arithmetic number, because the mean of its divisors is an integer number (30773160).

Almost surely, 2^858844074 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 858844074, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (984741120).

858844074 is an abundant number, since it is smaller than the sum of its proper divisors (1110638166).

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

858844074 is a wasteful number, since it uses less digits than its factorization.

858844074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8275.

The product of its (nonzero) digits is 1146880, while the sum is 48.

The square root of 858844074 is about 29306.0415955482. The cubic root of 858844074 is about 950.5422846661.

The spelling of 858844074 in words is "eight hundred fifty-eight million, eight hundred forty-four thousand, seventy-four".