38491369 has 4 divisors (see below), whose sum is σ = 43990144. Its totient is φ = 32992596.

The previous prime is 38491357. The next prime is 38491373. The reversal of 38491369 is 96319483.

38491369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 96319483 = 13 ⋅7409191.

It is not a de Polignac number, because 38491369 - 2⁹ = 38490857 is a prime.

It is a super-2 number, since 2×38491369² = 2963170974988322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38491339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2749377 + ... + 2749390.

It is an arithmetic number, because the mean of its divisors is an integer number (10997536).

Almost surely, 2^38491369 is an apocalyptic number.

It is an amenable number.

38491369 is a deficient number, since it is larger than the sum of its proper divisors (5498775).

38491369 is an equidigital number, since it uses as much as digits as its factorization.

38491369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5498774.

The product of its digits is 139968, while the sum is 43.

The square root of 38491369 is about 6204.1412782109. The cubic root of 38491369 is about 337.6404361142.

The spelling of 38491369 in words is "thirty-eight million, four hundred ninety-one thousand, three hundred sixty-nine".