858320492 has 12 divisors (see below), whose sum is σ = 1503857040. Its totient is φ = 428647056.

The previous prime is 858320473. The next prime is 858320521. The reversal of 858320492 is 294023858.

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, 124523 + ... + 131234.

It is an arithmetic number, because the mean of its divisors is an integer number (125321420).

Almost surely, 2^858320492 is an apocalyptic number.

It is an amenable number.

858320492 is a deficient number, since it is larger than the sum of its proper divisors (645536548).

858320492 is a wasteful number, since it uses less digits than its factorization.

858320492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256600 (or 256598 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 858320492 is about 29297.1072292129. The cubic root of 858320492 is about 950.3490838994.

The spelling of 858320492 in words is "eight hundred fifty-eight million, three hundred twenty thousand, four hundred ninety-two".