38797831 has 2 divisors, whose sum is σ = 38797832. Its totient is φ = 38797830.

The previous prime is 38797813. The next prime is 38797861. The reversal of 38797831 is 13879783.

It is a happy number.

Together with previous prime (38797813) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (13879783) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38797831 is a prime.

It is a super-2 number, since 2×38797831² = 3010543380609122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38797861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19398915 + 19398916.

It is an arithmetic number, because the mean of its divisors is an integer number (19398916).

Almost surely, 2^38797831 is an apocalyptic number.

38797831 is a deficient number, since it is larger than the sum of its proper divisors (1).

38797831 is an equidigital number, since it uses as much as digits as its factorization.

38797831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 46.

The square root of 38797831 is about 6228.7904925435. The cubic root of 38797831 is about 338.5341477870.

The spelling of 38797831 in words is "thirty-eight million, seven hundred ninety-seven thousand, eight hundred thirty-one".