418444 has 18 divisors (see below), whose sum is σ = 794220. Its totient is φ = 192816.

The previous prime is 418427. The next prime is 418447. The reversal of 418444 is 444814.

It is a happy number.

It is a super-2 number, since 2×418444² = 350190762272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (418447) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 367 + ... + 985.

2⁴¹⁸⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

418444 is a deficient number, since it is larger than the sum of its proper divisors (375776).

418444 is a wasteful number, since it uses less digits than its factorization.

418444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649 (or 634 counting only the distinct ones).

The product of its digits is 2048, while the sum is 25.

The square root of 418444 is about 646.8724758405. The cubic root of 418444 is about 74.7961277986.

The spelling of 418444 in words is "four hundred eighteen thousand, four hundred forty-four".