38644867 has 2 divisors, whose sum is σ = 38644868. Its totient is φ = 38644866.

The previous prime is 38644843. The next prime is 38644873. The reversal of 38644867 is 76844683.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38644867 - 2¹⁵ = 38612099 is a prime.

It is not a weakly prime, because it can be changed into another prime (38644877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19322433 + 19322434.

It is an arithmetic number, because the mean of its divisors is an integer number (19322434).

Almost surely, 2^38644867 is an apocalyptic number.

38644867 is a deficient number, since it is larger than the sum of its proper divisors (1).

38644867 is an equidigital number, since it uses as much as digits as its factorization.

38644867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 774144, while the sum is 46.

The square root of 38644867 is about 6216.4995777367. The cubic root of 38644867 is about 338.0886611943.

The spelling of 38644867 in words is "thirty-eight million, six hundred forty-four thousand, eight hundred sixty-seven".