7089581921 has 8 divisors (see below), whose sum is σ = 7332960000. Its totient is φ = 6847121520.

The previous prime is 7089581909. The next prime is 7089581923. The reversal of 7089581921 is 1291859807.

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-7089581921 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7089581921.

It is not an unprimeable number, because it can be changed into a prime (7089581923) 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, 213686 + ... + 244623.

It is an arithmetic number, because the mean of its divisors is an integer number (916620000).

Almost surely, 2^7089581921 is an apocalyptic number.

It is an amenable number.

7089581921 is a deficient number, since it is larger than the sum of its proper divisors (243378079).

7089581921 is a wasteful number, since it uses less digits than its factorization.

7089581921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458839.

The product of its (nonzero) digits is 362880, while the sum is 50.

The square root of 7089581921 is about 84199.6551121203. The cubic root of 7089581921 is about 1921.0568112308.

The spelling of 7089581921 in words is "seven billion, eighty-nine million, five hundred eighty-one thousand, nine hundred twenty-one".