858794990 has 8 divisors (see below), whose sum is σ = 1545831000. Its totient is φ = 343517992.

The previous prime is 858794983. The next prime is 858795037. The reversal of 858794990 is 99497858.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42939740 + ... + 42939759.

It is an arithmetic number, because the mean of its divisors is an integer number (193228875).

Almost surely, 2^858794990 is an apocalyptic number.

858794990 is a deficient number, since it is larger than the sum of its proper divisors (687036010).

858794990 is a wasteful number, since it uses less digits than its factorization.

858794990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85879506.

The product of its (nonzero) digits is 6531840, while the sum is 59.

The square root of 858794990 is about 29305.2041453391. The cubic root of 858794990 is about 950.5241760991.

The spelling of 858794990 in words is "eight hundred fifty-eight million, seven hundred ninety-four thousand, nine hundred ninety".