858398472 has 48 divisors (see below), whose sum is σ = 2410939440. Its totient is φ = 286132176.

The previous prime is 858398423. The next prime is 858398477. The reversal of 858398472 is 274893858.

It is a happy number.

858398472 is a `hidden beast` number, since 8 + 5 + 83 + 98 + 472 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (858398477) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 218838 + ... + 222725.

It is an arithmetic number, because the mean of its divisors is an integer number (50227905).

Almost surely, 2^858398472 is an apocalyptic number.

It is an amenable number.

858398472 is an abundant number, since it is smaller than the sum of its proper divisors (1552540968).

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

858398472 is a wasteful number, since it uses less digits than its factorization.

858398472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441584 (or 441568 counting only the distinct ones).

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

The square root of 858398472 is about 29298.4380471041. The cubic root of 858398472 is about 950.3778633503.

The spelling of 858398472 in words is "eight hundred fifty-eight million, three hundred ninety-eight thousand, four hundred seventy-two".