38444789 has 4 divisors (see below), whose sum is σ = 38457600. Its totient is φ = 38431980.

The previous prime is 38444761. The next prime is 38444821. The reversal of 38444789 is 98744483.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 98744483 = 17 ⋅5808499.

It is a cyclic number.

It is not a de Polignac number, because 38444789 - 2²⁰ = 37396213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38444719) 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, 794 + ... + 8804.

It is an arithmetic number, because the mean of its divisors is an integer number (9614400).

Almost surely, 2^38444789 is an apocalyptic number.

It is an amenable number.

38444789 is a deficient number, since it is larger than the sum of its proper divisors (12811).

38444789 is an equidigital number, since it uses as much as digits as its factorization.

38444789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12810.

The product of its digits is 774144, while the sum is 47.

The square root of 38444789 is about 6200.3861976493. The cubic root of 38444789 is about 337.5041835787.

The spelling of 38444789 in words is "thirty-eight million, four hundred forty-four thousand, seven hundred eighty-nine".