9993091879 has 4 divisors (see below), whose sum is σ = 9995226840. Its totient is φ = 9990956920.

The previous prime is 9993091853. The next prime is 9993091897. The reversal of 9993091879 is 9781903999.

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

It is a cyclic number.

It is not a de Polignac number, because 9993091879 - 2¹¹ = 9993089831 is a prime.

It is a super-3 number, since 3×9993091879³ (a number of 31 digits) contains 333 as substring.

It is a pancake number, because a pancake can be divided into 9993091879 parts by 141372 straight cuts.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9993091879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9993091279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1060444 + ... + 1069825.

It is an arithmetic number, because the mean of its divisors is an integer number (2498806710).

Almost surely, 2^9993091879 is an apocalyptic number.

9993091879 is a deficient number, since it is larger than the sum of its proper divisors (2134961).

9993091879 is a wasteful number, since it uses less digits than its factorization.

9993091879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2134960.

The product of its (nonzero) digits is 9920232, while the sum is 64.

The square root of 9993091879 is about 99965.4534276717. The cubic root of 9993091879 is about 2153.9384725658.

The spelling of 9993091879 in words is "nine billion, nine hundred ninety-three million, ninety-one thousand, eight hundred seventy-nine".