858893742 has 24 divisors (see below), whose sum is σ = 2126784816. Its totient is φ = 245398176.

The previous prime is 858893729. The next prime is 858893747. The reversal of 858893742 is 247398858.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (858893747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3408183 + ... + 3408434.

It is an arithmetic number, because the mean of its divisors is an integer number (88616034).

Almost surely, 2^858893742 is an apocalyptic number.

858893742 is an abundant number, since it is smaller than the sum of its proper divisors (1267891074).

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

858893742 is a wasteful number, since it uses less digits than its factorization.

858893742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6816632 (or 6816629 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The square root of 858893742 is about 29306.8889853563. Note that the first 3 decimals coincide. The cubic root of 858893742 is about 950.5606079860.

The spelling of 858893742 in words is "eight hundred fifty-eight million, eight hundred ninety-three thousand, seven hundred forty-two".