842331979 has 8 divisors (see below), whose sum is σ = 861073920. Its totient is φ = 823624296.

The previous prime is 842331961. The next prime is 842331989. The reversal of 842331979 is 979133248.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-842331979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (842331949) 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 7 ways as a sum of consecutive naturals, for example, 44802 + ... + 60760.

It is an arithmetic number, because the mean of its divisors is an integer number (107634240).

Almost surely, 2^842331979 is an apocalyptic number.

842331979 is a deficient number, since it is larger than the sum of its proper divisors (18741941).

842331979 is a wasteful number, since it uses less digits than its factorization.

842331979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17129.

The product of its digits is 326592, while the sum is 46.

The square root of 842331979 is about 29022.9560692911. The cubic root of 842331979 is about 944.4111292572.

The spelling of 842331979 in words is "eight hundred forty-two million, three hundred thirty-one thousand, nine hundred seventy-nine".