38816439 has 4 divisors (see below), whose sum is σ = 51755256. Its totient is φ = 25877624.

The previous prime is 38816419. The next prime is 38816447. The reversal of 38816439 is 93461883.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 38816439 - 2¹⁵ = 38783671 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38816439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38816419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6469404 + ... + 6469409.

It is an arithmetic number, because the mean of its divisors is an integer number (12938814).

Almost surely, 2^38816439 is an apocalyptic number.

38816439 is a deficient number, since it is larger than the sum of its proper divisors (12938817).

38816439 is a wasteful number, since it uses less digits than its factorization.

38816439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12938816.

The product of its digits is 124416, while the sum is 42.

The square root of 38816439 is about 6230.2840224182. The cubic root of 38816439 is about 338.5882610921.

The spelling of 38816439 in words is "thirty-eight million, eight hundred sixteen thousand, four hundred thirty-nine".