38847889 has 2 divisors, whose sum is σ = 38847890. Its totient is φ = 38847888.

The previous prime is 38847883. The next prime is 38847937. The reversal of 38847889 is 98874883.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26010000 + 12837889 = 5100^2 + 3583^2 .

It is a cyclic number.

It is not a de Polignac number, because 38847889 - 2³ = 38847881 is a prime.

It is not a weakly prime, because it can be changed into another prime (38847881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19423944 + 19423945.

It is an arithmetic number, because the mean of its divisors is an integer number (19423945).

Almost surely, 2^38847889 is an apocalyptic number.

It is an amenable number.

38847889 is a deficient number, since it is larger than the sum of its proper divisors (1).

38847889 is an equidigital number, since it uses as much as digits as its factorization.

38847889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3096576, while the sum is 55.

The square root of 38847889 is about 6232.8074733622. The cubic root of 38847889 is about 338.6796804878.

The spelling of 38847889 in words is "thirty-eight million, eight hundred forty-seven thousand, eight hundred eighty-nine".