38491 has 4 divisors (see below), whose sum is σ = 39184. Its totient is φ = 37800.

The previous prime is 38461. The next prime is 38501. The reversal of 38491 is 19483.

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

It is a cyclic number.

It is not a de Polignac number, because 38491 - 2⁵ = 38459 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (38431) 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, 255 + ... + 376.

It is an arithmetic number, because the mean of its divisors is an integer number (9796).

2³⁸⁴⁹¹ is an apocalyptic number.

38491 is a deficient number, since it is larger than the sum of its proper divisors (693).

38491 is an equidigital number, since it uses as much as digits as its factorization.

38491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692.

The product of its digits is 864, while the sum is 25.

The square root of 38491 is about 196.1912332394. The cubic root of 38491 is about 33.7639357173.

It can be divided in two parts, 38 and 491, that added together give a square (529 = 23²).

The spelling of 38491 in words is "thirty-eight thousand, four hundred ninety-one".