392980221 has 16 divisors (see below), whose sum is σ = 583080000. Its totient is φ = 261587664.

The previous prime is 392980187. The next prime is 392980223. The reversal of 392980221 is 122089293.

It is not a de Polignac number, because 392980221 - 2⁶ = 392980157 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (392980223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7530 + ... + 29028.

It is an arithmetic number, because the mean of its divisors is an integer number (36442500).

Almost surely, 2^392980221 is an apocalyptic number.

It is an amenable number.

392980221 is a deficient number, since it is larger than the sum of its proper divisors (190099779).

392980221 is a wasteful number, since it uses less digits than its factorization.

392980221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22185 (or 22179 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 392980221 is about 19823.7287360375. The cubic root of 392980221 is about 732.4706560638.

The spelling of 392980221 in words is "three hundred ninety-two million, nine hundred eighty thousand, two hundred twenty-one".