40440373 has 2 divisors, whose sum is σ = 40440374. Its totient is φ = 40440372.

The previous prime is 40440359. The next prime is 40440383. The reversal of 40440373 is 37304404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32012964 + 8427409 = 5658^2 + 2903^2 .

It is a cyclic number.

It is not a de Polignac number, because 40440373 - 2¹⁷ = 40309301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40440313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20220186 + 20220187.

It is an arithmetic number, because the mean of its divisors is an integer number (20220187).

Almost surely, 2^40440373 is an apocalyptic number.

It is an amenable number.

40440373 is a deficient number, since it is larger than the sum of its proper divisors (1).

40440373 is an equidigital number, since it uses as much as digits as its factorization.

40440373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 25.

The square root of 40440373 is about 6359.2745655460. The cubic root of 40440373 is about 343.2456569620.

Adding to 40440373 its reverse (37304404), we get a palindrome (77744777).

The spelling of 40440373 in words is "forty million, four hundred forty thousand, three hundred seventy-three".