38279893 has 4 divisors (see below), whose sum is σ = 38429100. Its totient is φ = 38130688.

The previous prime is 38279887. The next prime is 38279921. The reversal of 38279893 is 39897283.

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

It can be written as a sum of positive squares in 2 ways, for example, as 36687249 + 1592644 = 6057^2 + 1262^2 .

It is a cyclic number.

It is not a de Polignac number, because 38279893 - 2¹⁷ = 38148821 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38279873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74218 + ... + 74731.

It is an arithmetic number, because the mean of its divisors is an integer number (9607275).

Almost surely, 2^38279893 is an apocalyptic number.

It is an amenable number.

38279893 is a deficient number, since it is larger than the sum of its proper divisors (149207).

38279893 is a wasteful number, since it uses less digits than its factorization.

38279893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149206.

The product of its digits is 653184, while the sum is 49.

The square root of 38279893 is about 6187.0746722502. The cubic root of 38279893 is about 337.0209551199.

The spelling of 38279893 in words is "thirty-eight million, two hundred seventy-nine thousand, eight hundred ninety-three".