38408819 has 2 divisors, whose sum is σ = 38408820. Its totient is φ = 38408818.

The previous prime is 38408779. The next prime is 38408857. The reversal of 38408819 is 91880483.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38408819 - 2⁸ = 38408563 is a prime.

It is a super-2 number, since 2×38408819² = 2950474753949522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (38408869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19204409 + 19204410.

It is an arithmetic number, because the mean of its divisors is an integer number (19204410).

Almost surely, 2^38408819 is an apocalyptic number.

38408819 is a deficient number, since it is larger than the sum of its proper divisors (1).

38408819 is an equidigital number, since it uses as much as digits as its factorization.

38408819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 38408819 is about 6197.4848930836. The cubic root of 38408819 is about 337.3988913406.

The spelling of 38408819 in words is "thirty-eight million, four hundred eight thousand, eight hundred nineteen".