38849939 has 2 divisors, whose sum is σ = 38849940. Its totient is φ = 38849938.

The previous prime is 38849933. The next prime is 38849959. The reversal of 38849939 is 93994883.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38849939 - 2²⁰ = 37801363 is a prime.

It is not a weakly prime, because it can be changed into another prime (38849933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19424969 + 19424970.

It is an arithmetic number, because the mean of its divisors is an integer number (19424970).

Almost surely, 2^38849939 is an apocalyptic number.

38849939 is a deficient number, since it is larger than the sum of its proper divisors (1).

38849939 is an equidigital number, since it uses as much as digits as its factorization.

38849939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1679616, while the sum is 53.

The square root of 38849939 is about 6232.9719235690. The cubic root of 38849939 is about 338.6856377495.

The spelling of 38849939 in words is "thirty-eight million, eight hundred forty-nine thousand, nine hundred thirty-nine".