38566889 has 2 divisors, whose sum is σ = 38566890. Its totient is φ = 38566888.

The previous prime is 38566873. The next prime is 38566907. The reversal of 38566889 is 98866583.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34987225 + 3579664 = 5915^2 + 1892^2 .

It is a cyclic number.

It is not a de Polignac number, because 38566889 - 2⁴ = 38566873 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38566889.

It is not a weakly prime, because it can be changed into another prime (38566189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19283444 + 19283445.

It is an arithmetic number, because the mean of its divisors is an integer number (19283445).

Almost surely, 2^38566889 is an apocalyptic number.

It is an amenable number.

38566889 is a deficient number, since it is larger than the sum of its proper divisors (1).

38566889 is an equidigital number, since it uses as much as digits as its factorization.

38566889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2488320, while the sum is 53.

The square root of 38566889 is about 6210.2245531060. The cubic root of 38566889 is about 337.8611085097.

The spelling of 38566889 in words is "thirty-eight million, five hundred sixty-six thousand, eight hundred eighty-nine".