38486221 has 4 divisors (see below), whose sum is σ = 39727744. Its totient is φ = 37244700.

The previous prime is 38486209. The next prime is 38486233. The reversal of 38486221 is 12268483.

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: 12268483 = 2269 ⋅5407.

It is an interprime number because it is at equal distance from previous prime (38486209) and next prime (38486233).

It is a cyclic number.

It is not a de Polignac number, because 38486221 - 2⁹ = 38485709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38486251) 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, 620715 + ... + 620776.

It is an arithmetic number, because the mean of its divisors is an integer number (9931936).

Almost surely, 2^38486221 is an apocalyptic number.

38486221 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

38486221 is a deficient number, since it is larger than the sum of its proper divisors (1241523).

38486221 is a wasteful number, since it uses less digits than its factorization.

38486221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241522.

The product of its digits is 18432, while the sum is 34.

The square root of 38486221 is about 6203.7263801686. The cubic root of 38486221 is about 337.6253829520.

The spelling of 38486221 in words is "thirty-eight million, four hundred eighty-six thousand, two hundred twenty-one".