7919089 has 2 divisors, whose sum is σ = 7919090. Its totient is φ = 7919088.

The previous prime is 7919083. The next prime is 7919123. The reversal of 7919089 is 9809197.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7884864 + 34225 = 2808^2 + 185^2 .

It is an emirp because it is prime and its reverse (9809197) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7919089 - 2⁵ = 7919057 is a prime.

It is not a weakly prime, because it can be changed into another prime (7919083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3959544 + 3959545.

It is an arithmetic number, because the mean of its divisors is an integer number (3959545).

Almost surely, 2^7919089 is an apocalyptic number.

It is an amenable number.

7919089 is a deficient number, since it is larger than the sum of its proper divisors (1).

7919089 is an equidigital number, since it uses as much as digits as its factorization.

7919089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 43.

The square root of 7919089 is about 2814.0875963623. The cubic root of 7919089 is about 199.3234556861.

The spelling of 7919089 in words is "seven million, nine hundred nineteen thousand, eighty-nine".