858992946 has 16 divisors (see below), whose sum is σ = 1963412544. Its totient is φ = 245426544.

The previous prime is 858992941. The next prime is 858992947. The reversal of 858992946 is 649299858.

It is a self number, because there is not a number n which added to its sum of digits gives 858992946.

It is not an unprimeable number, because it can be changed into a prime (858992941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10226065 + ... + 10226148.

It is an arithmetic number, because the mean of its divisors is an integer number (122713284).

Almost surely, 2^858992946 is an apocalyptic number.

858992946 is an abundant number, since it is smaller than the sum of its proper divisors (1104419598).

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

858992946 is a wasteful number, since it uses less digits than its factorization.

858992946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20452225.

The product of its digits is 11197440, while the sum is 60.

The square root of 858992946 is about 29308.5814395716. The cubic root of 858992946 is about 950.5972038145.

The spelling of 858992946 in words is "eight hundred fifty-eight million, nine hundred ninety-two thousand, nine hundred forty-six".