38881439 has 2 divisors, whose sum is σ = 38881440. Its totient is φ = 38881438.

The previous prime is 38881411. The next prime is 38881457. The reversal of 38881439 is 93418883.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38881439 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38881439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38881039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19440719 + 19440720.

It is an arithmetic number, because the mean of its divisors is an integer number (19440720).

Almost surely, 2^38881439 is an apocalyptic number.

38881439 is a deficient number, since it is larger than the sum of its proper divisors (1).

38881439 is an equidigital number, since it uses as much as digits as its factorization.

38881439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 44.

The square root of 38881439 is about 6235.4982960466. The cubic root of 38881439 is about 338.7771498235. Note that the first 3 decimals are identical.

The spelling of 38881439 in words is "thirty-eight million, eight hundred eighty-one thousand, four hundred thirty-nine".