859648438 has 16 divisors (see below), whose sum is σ = 1425969936. Its totient is φ = 385395840.

The previous prime is 859648399. The next prime is 859648453. The reversal of 859648438 is 834846958.

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, 266031 + ... + 269242.

It is an arithmetic number, because the mean of its divisors is an integer number (89123121).

Almost surely, 2^859648438 is an apocalyptic number.

859648438 is a deficient number, since it is larger than the sum of its proper divisors (566321498).

859648438 is a wasteful number, since it uses less digits than its factorization.

859648438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535359.

The product of its digits is 6635520, while the sum is 55.

The square root of 859648438 is about 29319.7619021710. The cubic root of 859648438 is about 950.8389405426.

The spelling of 859648438 in words is "eight hundred fifty-nine million, six hundred forty-eight thousand, four hundred thirty-eight".