38990899 has 2 divisors, whose sum is σ = 38990900. Its totient is φ = 38990898.

The previous prime is 38990879. The next prime is 38990909. The reversal of 38990899 is 99809983.

38990899 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38990899 - 2⁹ = 38990387 is a prime.

It is not a weakly prime, because it can be changed into another prime (38990879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19495449 + 19495450.

It is an arithmetic number, because the mean of its divisors is an integer number (19495450).

Almost surely, 2^38990899 is an apocalyptic number.

38990899 is a deficient number, since it is larger than the sum of its proper divisors (1).

38990899 is an equidigital number, since it uses as much as digits as its factorization.

38990899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1259712, while the sum is 55.

The square root of 38990899 is about 6244.2692927195. The cubic root of 38990899 is about 339.0947632618.

The spelling of 38990899 in words is "thirty-eight million, nine hundred ninety thousand, eight hundred ninety-nine".