383006221 has 12 divisors (see below), whose sum is σ = 418780128. Its totient is φ = 350095824.

The previous prime is 383006213. The next prime is 383006227. The reversal of 383006221 is 122600383.

It is not a de Polignac number, because 383006221 - 2³ = 383006213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (383006227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6406 + ... + 28408.

It is an arithmetic number, because the mean of its divisors is an integer number (34898344).

Almost surely, 2^383006221 is an apocalyptic number.

It is an amenable number.

383006221 is a deficient number, since it is larger than the sum of its proper divisors (35773907).

383006221 is a wasteful number, since it uses less digits than its factorization.

383006221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22132 (or 22119 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 383006221 is about 19570.5447292609. The cubic root of 383006221 is about 726.2206759084.

It can be divided in two parts, 38300 and 6221, that added together give a square (44521 = 211²).

The spelling of 383006221 in words is "three hundred eighty-three million, six thousand, two hundred twenty-one".