38739443 has 2 divisors, whose sum is σ = 38739444. Its totient is φ = 38739442.

The previous prime is 38739401. The next prime is 38739469. The reversal of 38739443 is 34493783.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38739443 - 2⁸ = 38739187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38739443.

It is not a weakly prime, because it can be changed into another prime (38739473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19369721 + 19369722.

It is an arithmetic number, because the mean of its divisors is an integer number (19369722).

Almost surely, 2^38739443 is an apocalyptic number.

38739443 is a deficient number, since it is larger than the sum of its proper divisors (1).

38739443 is an equidigital number, since it uses as much as digits as its factorization.

38739443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 41.

The square root of 38739443 is about 6224.1017825868. The cubic root of 38739443 is about 338.3642391843.

The spelling of 38739443 in words is "thirty-eight million, seven hundred thirty-nine thousand, four hundred forty-three".