38868971 has 2 divisors, whose sum is σ = 38868972. Its totient is φ = 38868970.

The previous prime is 38868913. The next prime is 38868979. The reversal of 38868971 is 17986883.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38868971 is a prime.

It is not a weakly prime, because it can be changed into another prime (38868979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19434485 + 19434486.

It is an arithmetic number, because the mean of its divisors is an integer number (19434486).

Almost surely, 2^38868971 is an apocalyptic number.

38868971 is a deficient number, since it is larger than the sum of its proper divisors (1).

38868971 is an equidigital number, since it uses as much as digits as its factorization.

38868971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 50.

The square root of 38868971 is about 6234.4984561711. The cubic root of 38868971 is about 338.7409343852.

The spelling of 38868971 in words is "thirty-eight million, eight hundred sixty-eight thousand, nine hundred seventy-one".