3218859 has 30 divisors (see below), whose sum is σ = 5600364. Its totient is φ = 1837080.

The previous prime is 3218843. The next prime is 3218861. The reversal of 3218859 is 9588123.

It is not a de Polignac number, because 3218859 - 2⁴ = 3218843 is a prime.

It is a super-2 number, since 2×3218859² = 20722106523762, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

3218859 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3218819) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 3564 + ... + 4374.

Almost surely, 2^3218859 is an apocalyptic number.

3218859 is a deficient number, since it is larger than the sum of its proper divisors (2381505).

3218859 is an equidigital number, since it uses as much as digits as its factorization.

3218859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837 (or 821 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 3218859 is about 1794.1178891032. The cubic root of 3218859 is about 147.6501812321.

It can be divided in two parts, 321 and 8859, that added together give a triangular number (9180 = T₁₃₅).

The spelling of 3218859 in words is "three million, two hundred eighteen thousand, eight hundred fifty-nine".