38385899 has 2 divisors, whose sum is σ = 38385900. Its totient is φ = 38385898.

The previous prime is 38385869. The next prime is 38385917. The reversal of 38385899 is 99858383.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38385899 - 2¹² = 38381803 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 38385899.

It is not a weakly prime, because it can be changed into another prime (38385839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19192949 + 19192950.

It is an arithmetic number, because the mean of its divisors is an integer number (19192950).

Almost surely, 2^38385899 is an apocalyptic number.

38385899 is a deficient number, since it is larger than the sum of its proper divisors (1).

38385899 is an equidigital number, since it uses as much as digits as its factorization.

38385899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1866240, while the sum is 53.

The square root of 38385899 is about 6195.6354799165. The cubic root of 38385899 is about 337.3317650787.

The spelling of 38385899 in words is "thirty-eight million, three hundred eighty-five thousand, eight hundred ninety-nine".