2009392221 has 8 divisors (see below), whose sum is σ = 2681848960. Its totient is φ = 1338265152.

The previous prime is 2009392199. The next prime is 2009392237. The reversal of 2009392221 is 1222939002.

It is a happy number.

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

It is not a de Polignac number, because 2009392221 - 2⁶ = 2009392157 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 (2009392321) 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, 328885 + ... + 334938.

It is an arithmetic number, because the mean of its divisors is an integer number (335231120).

Almost surely, 2^2009392221 is an apocalyptic number.

It is an amenable number.

2009392221 is a deficient number, since it is larger than the sum of its proper divisors (672456739).

2009392221 is a wasteful number, since it uses less digits than its factorization.

2009392221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664835.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 2009392221 is about 44826.2447791470. The cubic root of 2009392221 is about 1261.8902134581.

The spelling of 2009392221 in words is "two billion, nine million, three hundred ninety-two thousand, two hundred twenty-one".