38813899 has 2 divisors, whose sum is σ = 38813900. Its totient is φ = 38813898.

The previous prime is 38813893. The next prime is 38813911. The reversal of 38813899 is 99831883.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38813899 - 2²¹ = 36716747 is a prime.

It is not a weakly prime, because it can be changed into another prime (38813893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19406949 + 19406950.

It is an arithmetic number, because the mean of its divisors is an integer number (19406950).

Almost surely, 2^38813899 is an apocalyptic number.

38813899 is a deficient number, since it is larger than the sum of its proper divisors (1).

38813899 is an equidigital number, since it uses as much as digits as its factorization.

38813899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373248, while the sum is 49.

The square root of 38813899 is about 6230.0801760491. The cubic root of 38813899 is about 338.5808756220.

The spelling of 38813899 in words is "thirty-eight million, eight hundred thirteen thousand, eight hundred ninety-nine".