444542418 has 160 divisors (see below), whose sum is σ = 1124057088. Its totient is φ = 130636800.

The previous prime is 444542393. The next prime is 444542419. The reversal of 444542418 is 814245444.

It is a super-2 number, since 2×444542418² = 395235922802573448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (444542419) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3500271 + ... + 3500397.

Almost surely, 2^444542418 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 444542418, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (562028544).

444542418 is an abundant number, since it is smaller than the sum of its proper divisors (679514670).

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

444542418 is a wasteful number, since it uses less digits than its factorization.

444542418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230 (or 221 counting only the distinct ones).

The product of its digits is 81920, while the sum is 36.

The square root of 444542418 is about 21084.1745866420. The cubic root of 444542418 is about 763.1989001111.

The spelling of 444542418 in words is "four hundred forty-four million, five hundred forty-two thousand, four hundred eighteen".