859401940 has 24 divisors (see below), whose sum is σ = 1805378400. Its totient is φ = 343639968.

The previous prime is 859401911. The next prime is 859401953. The reversal of 859401940 is 49104958.

It is a junction number, because it is equal to n+sod(n) for n = 859401893 and 859401902.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70411 + ... + 81709.

It is an arithmetic number, because the mean of its divisors is an integer number (75224100).

Almost surely, 2^859401940 is an apocalyptic number.

It is an amenable number.

859401940 is an abundant number, since it is smaller than the sum of its proper divisors (945976460).

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

859401940 is a wasteful number, since it uses less digits than its factorization.

859401940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15111 (or 15109 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 859401940 is about 29315.5579854793. The cubic root of 859401940 is about 950.7480497813.

The spelling of 859401940 in words is "eight hundred fifty-nine million, four hundred one thousand, nine hundred forty".