38491229 has 4 divisors (see below), whose sum is σ = 43989984. Its totient is φ = 32992476.

The previous prime is 38491223. The next prime is 38491237. The reversal of 38491229 is 92219483.

38491229 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: 92219483 = 19 ⋅4853657.

It is a cyclic number.

It is not a de Polignac number, because 38491229 - 2⁸ = 38490973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38491192 and 38491201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38491223) 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, 2749367 + ... + 2749380.

It is an arithmetic number, because the mean of its divisors is an integer number (10997496).

Almost surely, 2^38491229 is an apocalyptic number.

It is an amenable number.

38491229 is a deficient number, since it is larger than the sum of its proper divisors (5498755).

38491229 is an equidigital number, since it uses as much as digits as its factorization.

38491229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5498754.

The product of its digits is 31104, while the sum is 38.

The square root of 38491229 is about 6204.1299954143. The cubic root of 38491229 is about 337.6400267608.

The spelling of 38491229 in words is "thirty-eight million, four hundred ninety-one thousand, two hundred twenty-nine".