38320889 has 4 divisors (see below), whose sum is σ = 38351220. Its totient is φ = 38290560.

The previous prime is 38320879. The next prime is 38320927. The reversal of 38320889 is 98802383.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98802383 = 9173 ⋅10771.

It can be written as a sum of positive squares in 2 ways, for example, as 20748025 + 17572864 = 4555^2 + 4192^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38320889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38320859) 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, 13184 + ... + 15825.

It is an arithmetic number, because the mean of its divisors is an integer number (9587805).

Almost surely, 2^38320889 is an apocalyptic number.

It is an amenable number.

38320889 is a deficient number, since it is larger than the sum of its proper divisors (30331).

38320889 is a wasteful number, since it uses less digits than its factorization.

38320889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30330.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 38320889 is about 6190.3868215161. The cubic root of 38320889 is about 337.1412234962.

The spelling of 38320889 in words is "thirty-eight million, three hundred twenty thousand, eight hundred eighty-nine".