38856439 has 2 divisors, whose sum is σ = 38856440. Its totient is φ = 38856438.

The previous prime is 38856427. The next prime is 38856443. The reversal of 38856439 is 93465883.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38856439 - 2¹⁵ = 38823671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38856469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19428219 + 19428220.

It is an arithmetic number, because the mean of its divisors is an integer number (19428220).

Almost surely, 2^38856439 is an apocalyptic number.

38856439 is a deficient number, since it is larger than the sum of its proper divisors (1).

38856439 is an equidigital number, since it uses as much as digits as its factorization.

38856439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 622080, while the sum is 46.

The square root of 38856439 is about 6233.4933223675. The cubic root of 38856439 is about 338.7045252428.

The spelling of 38856439 in words is "thirty-eight million, eight hundred fifty-six thousand, four hundred thirty-nine".