444357198 has 64 divisors (see below), whose sum is σ = 1049256000. Its totient is φ = 139128192.

The previous prime is 444357191. The next prime is 444357209. The reversal of 444357198 is 891753444.

It is a super-2 number, since 2×444357198² = 394906638828822408, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444357191) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54108 + ... + 61776.

It is an arithmetic number, because the mean of its divisors is an integer number (16394625).

Almost surely, 2^444357198 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 444357198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (524628000).

444357198 is an abundant number, since it is smaller than the sum of its proper divisors (604898802).

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

444357198 is a wasteful number, since it uses less digits than its factorization.

444357198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7746 (or 7740 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 444357198 is about 21079.7817351129. The cubic root of 444357198 is about 763.0928889772.

The spelling of 444357198 in words is "four hundred forty-four million, three hundred fifty-seven thousand, one hundred ninety-eight".