9391221464 has 48 divisors (see below), whose sum is σ = 18725477280. Its totient is φ = 4414625280.

The previous prime is 9391221461. The next prime is 9391221551. The reversal of 9391221464 is 4641221939.

9391221464 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9391221461) 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 11 ways as a sum of consecutive naturals, for example, 3066494 + ... + 3069554.

It is an arithmetic number, because the mean of its divisors is an integer number (390114110).

Almost surely, 2^9391221464 is an apocalyptic number.

It is an amenable number.

9391221464 is a deficient number, since it is larger than the sum of its proper divisors (9334255816).

9391221464 is a wasteful number, since it uses less digits than its factorization.

9391221464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4428 (or 4407 counting only the distinct ones).

The product of its digits is 93312, while the sum is 41.

The square root of 9391221464 is about 96908.3147309868. The cubic root of 9391221464 is about 2109.7971147286.

The spelling of 9391221464 in words is "nine billion, three hundred ninety-one million, two hundred twenty-one thousand, four hundred sixty-four".