9214993993 has 4 divisors (see below), whose sum is σ = 9218722708. Its totient is φ = 9211265280.

The previous prime is 9214993979. The next prime is 9214994011. The reversal of 9214993993 is 3993994129.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2492305929 + 6722688064 = 49923^2 + 81992^2 .

It is a cyclic number.

It is not a de Polignac number, because 9214993993 - 2⁹ = 9214993481 is a prime.

It is a super-2 number, since 2×9214993993² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9214993093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1860648 + ... + 1865593.

It is an arithmetic number, because the mean of its divisors is an integer number (2304680677).

Almost surely, 2^9214993993 is an apocalyptic number.

It is an amenable number.

9214993993 is a deficient number, since it is larger than the sum of its proper divisors (3728715).

9214993993 is a wasteful number, since it uses less digits than its factorization.

9214993993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3728714.

The product of its digits is 4251528, while the sum is 58.

The square root of 9214993993 is about 95994.7602372129. The cubic root of 9214993993 is about 2096.5168254329.

The spelling of 9214993993 in words is "nine billion, two hundred fourteen million, nine hundred ninety-three thousand, nine hundred ninety-three".