40404442373 has 2 divisors, whose sum is σ = 40404442374. Its totient is φ = 40404442372.

The previous prime is 40404442333. The next prime is 40404442417. The reversal of 40404442373 is 37324440404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40391754529 + 12687844 = 200977^2 + 3562^2 .

It is a cyclic number.

It is not a de Polignac number, because 40404442373 - 2¹⁴ = 40404425989 is a prime.

It is a super-2 number, since 2×40404442373² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40404442333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20202221186 + 20202221187.

It is an arithmetic number, because the mean of its divisors is an integer number (20202221187).

Almost surely, 2^40404442373 is an apocalyptic number.

It is an amenable number.

40404442373 is a deficient number, since it is larger than the sum of its proper divisors (1).

40404442373 is an equidigital number, since it uses as much as digits as its factorization.

40404442373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129024, while the sum is 35.

Adding to 40404442373 its reverse (37324440404), we get a palindrome (77728882777).

The spelling of 40404442373 in words is "forty billion, four hundred four million, four hundred forty-two thousand, three hundred seventy-three".