1047943221 has 8 divisors (see below), whose sum is σ = 1504739040. Its totient is φ = 644888112.

The previous prime is 1047943207. The next prime is 1047943241. The reversal of 1047943221 is 1223497401.

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

It is not a de Polignac number, because 1047943221 - 2¹⁷ = 1047812149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1047943201) 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, 13435131 + ... + 13435208.

It is an arithmetic number, because the mean of its divisors is an integer number (188092380).

Almost surely, 2^1047943221 is an apocalyptic number.

It is an amenable number.

1047943221 is a deficient number, since it is larger than the sum of its proper divisors (456795819).

1047943221 is a wasteful number, since it uses less digits than its factorization.

1047943221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26870355.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 1047943221 is about 32371.9511460153. The cubic root of 1047943221 is about 1015.7322713690.

The spelling of 1047943221 in words is "one billion, forty-seven million, nine hundred forty-three thousand, two hundred twenty-one".