443245140 has 72 divisors (see below), whose sum is σ = 1447941768. Its totient is φ = 109105920.

The previous prime is 443245139. The next prime is 443245147. The reversal of 443245140 is 41542344.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 97061904 + 346183236 = 9852^2 + 18606^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (443245147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 92371 + ... + 97050.

Almost surely, 2^443245140 is an apocalyptic number.

It is an amenable number.

443245140 is an abundant number, since it is smaller than the sum of its proper divisors (1004696628).

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

443245140 is a wasteful number, since it uses less digits than its factorization.

443245140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189449 (or 189444 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 443245140 is about 21053.3878508899. The cubic root of 443245140 is about 762.4557795729.

Adding to 443245140 its reverse (41542344), we get a palindrome (484787484).

The spelling of 443245140 in words is "four hundred forty-three million, two hundred forty-five thousand, one hundred forty".