7928089 has 8 divisors (see below), whose sum is σ = 8588160. Its totient is φ = 7275216.

The previous prime is 7928083. The next prime is 7928099. The reversal of 7928089 is 9808297.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7928089 - 2¹¹ = 7926041 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7928083) 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, 624 + ... + 4030.

It is an arithmetic number, because the mean of its divisors is an integer number (1073520).

Almost surely, 2^7928089 is an apocalyptic number.

It is an amenable number.

7928089 is a deficient number, since it is larger than the sum of its proper divisors (660071).

7928089 is a wasteful number, since it uses less digits than its factorization.

7928089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3599.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 7928089 is about 2815.6862396226. The cubic root of 7928089 is about 199.3989370932.

The spelling of 7928089 in words is "seven million, nine hundred twenty-eight thousand, eighty-nine".