38540443 has 2 divisors, whose sum is σ = 38540444. Its totient is φ = 38540442.

The previous prime is 38540431. The next prime is 38540459. The reversal of 38540443 is 34404583.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38540443 - 2⁹ = 38539931 is a prime.

It is not a weakly prime, because it can be changed into another prime (38540413) 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, 19270221 + 19270222.

It is an arithmetic number, because the mean of its divisors is an integer number (19270222).

Almost surely, 2^38540443 is an apocalyptic number.

38540443 is a deficient number, since it is larger than the sum of its proper divisors (1).

38540443 is an equidigital number, since it uses as much as digits as its factorization.

38540443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 38540443 is about 6208.0949573923. The cubic root of 38540443 is about 337.7838650660.

It can be divided in two parts, 38540 and 443, that added together give a palindrome (38983).

The spelling of 38540443 in words is "thirty-eight million, five hundred forty thousand, four hundred forty-three".