979505321 has 8 divisors (see below), whose sum is σ = 991931304. Its totient is φ = 967127040.

The previous prime is 979505311. The next prime is 979505323. The reversal of 979505321 is 123505979.

It can be written as a sum of positive squares in 4 ways, for example, as 15713296 + 963792025 = 3964^2 + 31045^2 .

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-979505321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (979505323) 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, 30341 + ... + 53661.

It is an arithmetic number, because the mean of its divisors is an integer number (123991413).

Almost surely, 2^979505321 is an apocalyptic number.

It is an amenable number.

979505321 is a deficient number, since it is larger than the sum of its proper divisors (12425983).

979505321 is a wasteful number, since it uses less digits than its factorization.

979505321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23851.

The product of its (nonzero) digits is 85050, while the sum is 41.

The square root of 979505321 is about 31297.0497171858. The cubic root of 979505321 is about 993.1212313708.

The spelling of 979505321 in words is "nine hundred seventy-nine million, five hundred five thousand, three hundred twenty-one".