859621961 has 8 divisors (see below), whose sum is σ = 941977344. Its totient is φ = 777967920.

The previous prime is 859621957. The next prime is 859621967. The reversal of 859621961 is 169126958.

It is a happy number.

859621961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 859621961 - 2² = 859621957 is a prime.

It is not an unprimeable number, because it can be changed into a prime (859621967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172766 + ... + 177671.

It is an arithmetic number, because the mean of its divisors is an integer number (117747168).

Almost surely, 2^859621961 is an apocalyptic number.

It is an amenable number.

859621961 is a deficient number, since it is larger than the sum of its proper divisors (82355383).

859621961 is a wasteful number, since it uses less digits than its factorization.

859621961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350671.

The product of its digits is 233280, while the sum is 47.

The square root of 859621961 is about 29319.3103772923. The cubic root of 859621961 is about 950.8291785593.

The spelling of 859621961 in words is "eight hundred fifty-nine million, six hundred twenty-one thousand, nine hundred sixty-one".