979437993 has 4 divisors (see below), whose sum is σ = 1305917328. Its totient is φ = 652958660.

The previous prime is 979437923. The next prime is 979437997. The reversal of 979437993 is 399734979.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 979437993 - 2¹⁷ = 979306921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (979437997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163239663 + ... + 163239668.

It is an arithmetic number, because the mean of its divisors is an integer number (326479332).

Almost surely, 2^979437993 is an apocalyptic number.

It is an amenable number.

979437993 is a deficient number, since it is larger than the sum of its proper divisors (326479335).

979437993 is a wasteful number, since it uses less digits than its factorization.

979437993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326479334.

The product of its digits is 11573604, while the sum is 60.

The square root of 979437993 is about 31295.9740701580. The cubic root of 979437993 is about 993.0984762116.

The spelling of 979437993 in words is "nine hundred seventy-nine million, four hundred thirty-seven thousand, nine hundred ninety-three".