10847989 has 4 divisors (see below), whose sum is σ = 11486124. Its totient is φ = 10209856.

The previous prime is 10847983. The next prime is 10848011. The reversal of 10847989 is 98974801.

It is a happy number.

10847989 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98974801 = 59 ⋅1677539.

It can be written as a sum of positive squares in 2 ways, for example, as 3783025 + 7064964 = 1945^2 + 2658^2 .

It is a cyclic number.

It is not a de Polignac number, because 10847989 - 2⁵ = 10847957 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 (10847983) 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 3 ways as a sum of consecutive naturals, for example, 319042 + ... + 319075.

It is an arithmetic number, because the mean of its divisors is an integer number (2871531).

Almost surely, 2^10847989 is an apocalyptic number.

It is an amenable number.

10847989 is a deficient number, since it is larger than the sum of its proper divisors (638135).

10847989 is an equidigital number, since it uses as much as digits as its factorization.

10847989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638134.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 10847989 is about 3293.6285461478. The cubic root of 10847989 is about 221.3688006158.

The spelling of 10847989 in words is "ten million, eight hundred forty-seven thousand, nine hundred eighty-nine".