2203946921 has 8 divisors (see below), whose sum is σ = 2469287424. Its totient is φ = 1949436720.

The previous prime is 2203946911. The next prime is 2203946939. The reversal of 2203946921 is 1296493022.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-2203946921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2203946911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2707145 + ... + 2707958.

It is an arithmetic number, because the mean of its divisors is an integer number (308660928).

Almost surely, 2^2203946921 is an apocalyptic number.

It is an amenable number.

2203946921 is a deficient number, since it is larger than the sum of its proper divisors (265340503).

2203946921 is a wasteful number, since it uses less digits than its factorization.

2203946921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5415151.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 2203946921 is about 46946.2130634623. The cubic root of 2203946921 is about 1301.3687597186.

The spelling of 2203946921 in words is "two billion, two hundred three million, nine hundred forty-six thousand, nine hundred twenty-one".