858855046 has 12 divisors (see below), whose sum is σ = 1498614588. Its totient is φ = 368080692.

The previous prime is 858855013. The next prime is 858855061. The reversal of 858855046 is 640558858.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4381816 + ... + 4382011.

It is an arithmetic number, because the mean of its divisors is an integer number (124884549).

Almost surely, 2^858855046 is an apocalyptic number.

858855046 is a deficient number, since it is larger than the sum of its proper divisors (639759542).

858855046 is a wasteful number, since it uses less digits than its factorization.

858855046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8763843 (or 8763836 counting only the distinct ones).

The product of its (nonzero) digits is 1536000, while the sum is 49.

The square root of 858855046 is about 29306.2287918456. The cubic root of 858855046 is about 950.5463324732.

The spelling of 858855046 in words is "eight hundred fifty-eight million, eight hundred fifty-five thousand, forty-six".