9994409879 has 8 divisors (see below), whose sum is σ = 10047100752. Its totient is φ = 9941803200.

The previous prime is 9994409801. The next prime is 9994409921. The reversal of 9994409879 is 9789044999.

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

It is a cyclic number.

It is not a de Polignac number, because 9994409879 - 2¹⁶ = 9994344343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9994409479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224477 + ... + 265289.

It is an arithmetic number, because the mean of its divisors is an integer number (1255887594).

Almost surely, 2^9994409879 is an apocalyptic number.

9994409879 is a deficient number, since it is larger than the sum of its proper divisors (52690873).

9994409879 is a wasteful number, since it uses less digits than its factorization.

9994409879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42097.

The product of its (nonzero) digits is 52907904, while the sum is 68.

The square root of 9994409879 is about 99972.0454877262. The cubic root of 9994409879 is about 2154.0331635164.

The spelling of 9994409879 in words is "nine billion, nine hundred ninety-four million, four hundred nine thousand, eight hundred seventy-nine".