38996591 has 2 divisors, whose sum is σ = 38996592. Its totient is φ = 38996590.

The previous prime is 38996579. The next prime is 38996597. The reversal of 38996591 is 19569983.

38996591 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 a de Polignac number, because none of the positive numbers 2^k-38996591 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38996597) 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, 19498295 + 19498296.

It is an arithmetic number, because the mean of its divisors is an integer number (19498296).

Almost surely, 2^38996591 is an apocalyptic number.

38996591 is a deficient number, since it is larger than the sum of its proper divisors (1).

38996591 is an equidigital number, since it uses as much as digits as its factorization.

38996591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 524880, while the sum is 50.

The square root of 38996591 is about 6244.7250539956. The cubic root of 38996591 is about 339.1112631248. Note that the first 3 decimals are identical.

The spelling of 38996591 in words is "thirty-eight million, nine hundred ninety-six thousand, five hundred ninety-one".