38903221 has 8 divisors (see below), whose sum is σ = 44576000. Its totient is φ = 33259248.

The previous prime is 38903209. The next prime is 38903269. The reversal of 38903221 is 12230983.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38903221 - 2⁷ = 38903093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38903221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38903521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4221 + ... + 9778.

It is an arithmetic number, because the mean of its divisors is an integer number (5572000).

Almost surely, 2^38903221 is an apocalyptic number.

It is an amenable number.

38903221 is a deficient number, since it is larger than the sum of its proper divisors (5672779).

38903221 is a wasteful number, since it uses less digits than its factorization.

38903221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14403.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 38903221 is about 6237.2446641125. The cubic root of 38903221 is about 338.8404007946.

The spelling of 38903221 in words is "thirty-eight million, nine hundred three thousand, two hundred twenty-one".