858649996 has 12 divisors (see below), whose sum is σ = 1506226680. Its totient is φ = 428299520.

The previous prime is 858649963. The next prime is 858650011. The reversal of 858649996 is 699946858.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 254485 + ... + 257836.

It is an arithmetic number, because the mean of its divisors is an integer number (125518890).

Almost surely, 2^858649996 is an apocalyptic number.

It is an amenable number.

858649996 is a deficient number, since it is larger than the sum of its proper divisors (647576684).

858649996 is a wasteful number, since it uses less digits than its factorization.

858649996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512744 (or 512742 counting only the distinct ones).

The product of its digits is 33592320, while the sum is 64.

The square root of 858649996 is about 29302.7301799679. The cubic root of 858649996 is about 950.4706794125.

The spelling of 858649996 in words is "eight hundred fifty-eight million, six hundred forty-nine thousand, nine hundred ninety-six".