858530972 has 24 divisors (see below), whose sum is σ = 1619646000. Its totient is φ = 395842176.

The previous prime is 858530927. The next prime is 858530977. The reversal of 858530972 is 279035858.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (858530977) 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 7 ways as a sum of consecutive naturals, for example, 46679 + ... + 62417.

It is an arithmetic number, because the mean of its divisors is an integer number (67485250).

Almost surely, 2^858530972 is an apocalyptic number.

It is an amenable number.

858530972 is a deficient number, since it is larger than the sum of its proper divisors (761115028).

858530972 is a wasteful number, since it uses less digits than its factorization.

858530972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16805 (or 16803 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 47.

The square root of 858530972 is about 29300.6991725454. The cubic root of 858530972 is about 950.4267600622.

The spelling of 858530972 in words is "eight hundred fifty-eight million, five hundred thirty thousand, nine hundred seventy-two".