973579993 has 4 divisors (see below), whose sum is σ = 977368500. Its totient is φ = 969791488.

The previous prime is 973579897. The next prime is 973580009. The reversal of 973579993 is 399975379.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 399975379 = 43 ⋅9301753.

It can be written as a sum of positive squares in 2 ways, for example, as 953759689 + 19820304 = 30883^2 + 4452^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-973579993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (973579393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1893868 + ... + 1894381.

It is an arithmetic number, because the mean of its divisors is an integer number (244342125).

Almost surely, 2^973579993 is an apocalyptic number.

It is an amenable number.

973579993 is a deficient number, since it is larger than the sum of its proper divisors (3788507).

973579993 is a wasteful number, since it uses less digits than its factorization.

973579993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3788506.

The product of its digits is 14467005, while the sum is 61.

The square root of 973579993 is about 31202.2433969098. The cubic root of 973579993 is about 991.1146147631.

The spelling of 973579993 in words is "nine hundred seventy-three million, five hundred seventy-nine thousand, nine hundred ninety-three".