38868913 has 2 divisors, whose sum is σ = 38868914. Its totient is φ = 38868912.

The previous prime is 38868901. The next prime is 38868971. The reversal of 38868913 is 31986883.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24671089 + 14197824 = 4967^2 + 3768^2 .

It is a cyclic number.

It is not a de Polignac number, because 38868913 - 2¹⁷ = 38737841 is a prime.

It is not a weakly prime, because it can be changed into another prime (38868113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19434456 + 19434457.

It is an arithmetic number, because the mean of its divisors is an integer number (19434457).

Almost surely, 2^38868913 is an apocalyptic number.

It is an amenable number.

38868913 is a deficient number, since it is larger than the sum of its proper divisors (1).

38868913 is an equidigital number, since it uses as much as digits as its factorization.

38868913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 46.

The square root of 38868913 is about 6234.4938046324. The cubic root of 38868913 is about 338.7407658962.

The spelling of 38868913 in words is "thirty-eight million, eight hundred sixty-eight thousand, nine hundred thirteen".