38816789 has 4 divisors (see below), whose sum is σ = 42345600. Its totient is φ = 35287980.

The previous prime is 38816779. The next prime is 38816803. The reversal of 38816789 is 98761883.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98761883 = 11 ⋅8978353.

It is a cyclic number.

It is not a de Polignac number, because 38816789 - 2¹² = 38812693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38816759) 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, 1764389 + ... + 1764410.

It is an arithmetic number, because the mean of its divisors is an integer number (10586400).

Almost surely, 2^38816789 is an apocalyptic number.

It is an amenable number.

38816789 is a deficient number, since it is larger than the sum of its proper divisors (3528811).

38816789 is a wasteful number, since it uses less digits than its factorization.

38816789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3528810.

The product of its digits is 580608, while the sum is 50.

The square root of 38816789 is about 6230.3121109620. The cubic root of 38816789 is about 338.5892787497.

The spelling of 38816789 in words is "thirty-eight million, eight hundred sixteen thousand, seven hundred eighty-nine".