38897647 has 2 divisors, whose sum is σ = 38897648. Its totient is φ = 38897646.

The previous prime is 38897597. The next prime is 38897657. The reversal of 38897647 is 74679883.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (74679883) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38897647 - 2⁷ = 38897519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38897594 and 38897603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38897657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19448823 + 19448824.

It is an arithmetic number, because the mean of its divisors is an integer number (19448824).

Almost surely, 2^38897647 is an apocalyptic number.

38897647 is a deficient number, since it is larger than the sum of its proper divisors (1).

38897647 is an equidigital number, since it uses as much as digits as its factorization.

38897647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2032128, while the sum is 52.

The square root of 38897647 is about 6236.7978161874. The cubic root of 38897647 is about 338.8242171594.

The spelling of 38897647 in words is "thirty-eight million, eight hundred ninety-seven thousand, six hundred forty-seven".