973947809 has 8 divisors (see below), whose sum is σ = 1034616000. Its totient is φ = 914220432.

The previous prime is 973947749. The next prime is 973947851. The reversal of 973947809 is 908749379.

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-973947809 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (973947209) 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 7 ways as a sum of consecutive naturals, for example, 233069 + ... + 237210.

It is an arithmetic number, because the mean of its divisors is an integer number (129327000).

Almost surely, 2^973947809 is an apocalyptic number.

It is an amenable number.

973947809 is a deficient number, since it is larger than the sum of its proper divisors (60668191).

973947809 is a wasteful number, since it uses less digits than its factorization.

973947809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470407.

The product of its (nonzero) digits is 3429216, while the sum is 56.

The square root of 973947809 is about 31208.1369036987. The cubic root of 973947809 is about 991.2394125599.

The spelling of 973947809 in words is "nine hundred seventy-three million, nine hundred forty-seven thousand, eight hundred nine".