859661952 has 32 divisors (see below), whose sum is σ = 2283478080. Its totient is φ = 286553856.

The previous prime is 859661941. The next prime is 859661953. The reversal of 859661952 is 259166958.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 859661895 and 859661904.

It is not an unprimeable number, because it can be changed into a prime (859661953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1118968 + ... + 1119735.

It is an arithmetic number, because the mean of its divisors is an integer number (71358690).

Almost surely, 2^859661952 is an apocalyptic number.

It is an amenable number.

859661952 is an abundant number, since it is smaller than the sum of its proper divisors (1423816128).

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

859661952 is a wasteful number, since it uses less digits than its factorization.

859661952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2238720 (or 2238708 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 51.

The square root of 859661952 is about 29319.9923601627. The cubic root of 859661952 is about 950.8439230329.

The spelling of 859661952 in words is "eight hundred fifty-nine million, six hundred sixty-one thousand, nine hundred fifty-two".