818444 has 36 divisors (see below), whose sum is σ = 1675800. Its totient is φ = 348480.

The previous prime is 818429. The next prime is 818453. The reversal of 818444 is 444818.

818444 = T₉₀ + T₉₁ + ... + T₁₇₇.

818444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×818444² = 1339701162272, which contains 22 as substring.

It is a plaindrome in base 12 and base 15.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9152 + ... + 9240.

It is an arithmetic number, because the mean of its divisors is an integer number (46550).

2⁸¹⁸⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

818444 is an abundant number, since it is smaller than the sum of its proper divisors (857356).

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

818444 is a wasteful number, since it uses less digits than its factorization.

818444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 121 counting only the distinct ones).

The product of its digits is 4096, while the sum is 29.

The square root of 818444 is about 904.6789485779. The cubic root of 818444 is about 93.5397754644.

It can be divided in two parts, 8184 and 44, that added together give a palindrome (8228).

The spelling of 818444 in words is "eight hundred eighteen thousand, four hundred forty-four".