4291221393 has 12 divisors (see below), whose sum is σ = 6225739728. Its totient is φ = 2848210200.

The previous prime is 4291221391. The next prime is 4291221433. The reversal of 4291221393 is 3931221924.

4291221393 is a `hidden beast` number, since 42 + 9 + 1 + 221 + 393 = 666.

It is not a de Polignac number, because 4291221393 - 2¹ = 4291221391 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4291221391) 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, 1048183 + ... + 1052268.

It is an arithmetic number, because the mean of its divisors is an integer number (518811644).

Almost surely, 2^4291221393 is an apocalyptic number.

It is an amenable number.

4291221393 is a deficient number, since it is larger than the sum of its proper divisors (1934518335).

4291221393 is a wasteful number, since it uses less digits than its factorization.

4291221393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100684 (or 2100681 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 4291221393 is about 65507.4147940521. The cubic root of 4291221393 is about 1625.0259742436.

The spelling of 4291221393 in words is "four billion, two hundred ninety-one million, two hundred twenty-one thousand, three hundred ninety-three".