40443234401 has 2 divisors, whose sum is σ = 40443234402. Its totient is φ = 40443234400.

The previous prime is 40443234397. The next prime is 40443234421. The reversal of 40443234401 is 10443234404.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32847937600 + 7595296801 = 181240^2 + 87151^2 .

It is a cyclic number.

It is not a de Polignac number, because 40443234401 - 2² = 40443234397 is a prime.

It is not a weakly prime, because it can be changed into another prime (40443234421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20221617200 + 20221617201.

It is an arithmetic number, because the mean of its divisors is an integer number (20221617201).

Almost surely, 2^40443234401 is an apocalyptic number.

It is an amenable number.

40443234401 is a deficient number, since it is larger than the sum of its proper divisors (1).

40443234401 is an equidigital number, since it uses as much as digits as its factorization.

40443234401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 40443234401 its reverse (10443234404), we get a palindrome (50886468805).

The spelling of 40443234401 in words is "forty billion, four hundred forty-three million, two hundred thirty-four thousand, four hundred one".