7089881 has 2 divisors, whose sum is σ = 7089882. Its totient is φ = 7089880.

The previous prime is 7089877. The next prime is 7089889. The reversal of 7089881 is 1889807.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7070281 + 19600 = 2659^2 + 140^2 .

It is a cyclic number.

It is not a de Polignac number, because 7089881 - 2² = 7089877 is a prime.

It is a super-2 number, since 2×7089881² = 100532825188322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7089889) 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 as a sum of consecutive naturals, namely, 3544940 + 3544941.

It is an arithmetic number, because the mean of its divisors is an integer number (3544941).

Almost surely, 2^7089881 is an apocalyptic number.

It is an amenable number.

7089881 is a deficient number, since it is larger than the sum of its proper divisors (1).

7089881 is an equidigital number, since it uses as much as digits as its factorization.

7089881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 41.

The square root of 7089881 is about 2662.6830453511. The cubic root of 7089881 is about 192.1083824562.

The spelling of 7089881 in words is "seven million, eighty-nine thousand, eight hundred eighty-one".