858149424 has 120 divisors (see below), whose sum is σ = 2707656560. Its totient is φ = 260029440.

The previous prime is 858149423. The next prime is 858149431. The reversal of 858149424 is 424941858.

858149424 is a `hidden beast` number, since 8 + 581 + 49 + 4 + 24 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 858149424.

It is not an unprimeable number, because it can be changed into a prime (858149423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44064 + ... + 60480.

Almost surely, 2^858149424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 858149424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1353828280).

858149424 is an abundant number, since it is smaller than the sum of its proper divisors (1849507136).

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

858149424 is a wasteful number, since it uses less digits than its factorization.

858149424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16456 (or 16433 counting only the distinct ones).

The product of its digits is 368640, while the sum is 45.

The square root of 858149424 is about 29294.1875463376. The cubic root of 858149424 is about 950.2859431028.

The spelling of 858149424 in words is "eight hundred fifty-eight million, one hundred forty-nine thousand, four hundred twenty-four".