38860221 has 4 divisors (see below), whose sum is σ = 51813632. Its totient is φ = 25906812.

The previous prime is 38860207. The next prime is 38860223. The reversal of 38860221 is 12206883.

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.

It is not a de Polignac number, because 38860221 - 2⁵ = 38860189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38860223) 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, 6476701 + ... + 6476706.

It is an arithmetic number, because the mean of its divisors is an integer number (12953408).

Almost surely, 2^38860221 is an apocalyptic number.

It is an amenable number.

38860221 is a deficient number, since it is larger than the sum of its proper divisors (12953411).

38860221 is a wasteful number, since it uses less digits than its factorization.

38860221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12953410.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 38860221 is about 6233.7966761838. The cubic root of 38860221 is about 338.7155138887.

The spelling of 38860221 in words is "thirty-eight million, eight hundred sixty thousand, two hundred twenty-one".