443540141 has 12 divisors (see below), whose sum is σ = 498871296. Its totient is φ = 393836520.

The previous prime is 443540113. The next prime is 443540147. The reversal of 443540141 is 141045344.

It is a happy number.

It is not a de Polignac number, because 443540141 - 2¹⁸ = 443277997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 443540141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (443540147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37421 + ... + 47826.

It is an arithmetic number, because the mean of its divisors is an integer number (41572608).

Almost surely, 2^443540141 is an apocalyptic number.

It is an amenable number.

443540141 is a deficient number, since it is larger than the sum of its proper divisors (55331155).

443540141 is a wasteful number, since it uses less digits than its factorization.

443540141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85312 (or 85301 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 443540141 is about 21060.3927076396. The cubic root of 443540141 is about 762.6248924152.

Adding to 443540141 its reverse (141045344), we get a palindrome (584585485).

The spelling of 443540141 in words is "four hundred forty-three million, five hundred forty thousand, one hundred forty-one".