9942820879 has 8 divisors (see below), whose sum is σ = 10005914880. Its totient is φ = 9879906456.

The previous prime is 9942820817. The next prime is 9942820931. The reversal of 9942820879 is 9780282499.

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 9942820879 - 2²⁷ = 9808603151 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 (9952820879) 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, 67072 + ... + 156154.

It is an arithmetic number, because the mean of its divisors is an integer number (1250739360).

Almost surely, 2^9942820879 is an apocalyptic number.

9942820879 is a deficient number, since it is larger than the sum of its proper divisors (63094001).

9942820879 is a wasteful number, since it uses less digits than its factorization.

9942820879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89789.

The product of its (nonzero) digits is 5225472, while the sum is 58.

The square root of 9942820879 is about 99713.6945409205. The cubic root of 9942820879 is about 2150.3205492135.

The spelling of 9942820879 in words is "nine billion, nine hundred forty-two million, eight hundred twenty thousand, eight hundred seventy-nine".