38815249 has 4 divisors (see below), whose sum is σ = 42343920. Its totient is φ = 35286580.

The previous prime is 38815247. The next prime is 38815261. The reversal of 38815249 is 94251883.

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: 94251883 = 11 ⋅8568353.

It is a cyclic number.

It is not a de Polignac number, because 38815249 - 2¹ = 38815247 is a prime.

It is a Smith number, since the sum of its digits (40) 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 not an unprimeable number, because it can be changed into a prime (38815243) 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, 1764319 + ... + 1764340.

It is an arithmetic number, because the mean of its divisors is an integer number (10585980).

Almost surely, 2^38815249 is an apocalyptic number.

It is an amenable number.

38815249 is a deficient number, since it is larger than the sum of its proper divisors (3528671).

38815249 is a wasteful number, since it uses less digits than its factorization.

38815249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3528670.

The product of its digits is 69120, while the sum is 40.

The square root of 38815249 is about 6230.1885204222. The cubic root of 38815249 is about 338.5848010104.

The spelling of 38815249 in words is "thirty-eight million, eight hundred fifteen thousand, two hundred forty-nine".