38738889 has 24 divisors (see below), whose sum is σ = 65682240. Its totient is φ = 21536928.

The previous prime is 38738881. The next prime is 38738897. The reversal of 38738889 is 98883783.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (38738881) and next prime (38738897).

It is not a de Polignac number, because 38738889 - 2³ = 38738881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38738881) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5979 + ... + 10640.

It is an arithmetic number, because the mean of its divisors is an integer number (2736760).

Almost surely, 2^38738889 is an apocalyptic number.

It is an amenable number.

38738889 is a deficient number, since it is larger than the sum of its proper divisors (26943351).

38738889 is a wasteful number, since it uses less digits than its factorization.

38738889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16669 (or 16666 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The square root of 38738889 is about 6224.0572780141. The cubic root of 38738889 is about 338.3626262315.

The spelling of 38738889 in words is "thirty-eight million, seven hundred thirty-eight thousand, eight hundred eighty-nine".