10289989 has 4 divisors (see below), whose sum is σ = 10304140. Its totient is φ = 10275840.

The previous prime is 10289971. The next prime is 10290019. The reversal of 10289989 is 98998201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98998201 = 7937 ⋅12473.

It can be written as a sum of positive squares in 2 ways, for example, as 2505889 + 7784100 = 1583^2 + 2790^2 .

It is a cyclic number.

It is not a de Polignac number, because 10289989 - 2⁵ = 10289957 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 (10289689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5922 + ... + 7459.

It is an arithmetic number, because the mean of its divisors is an integer number (2576035).

Almost surely, 2^10289989 is an apocalyptic number.

It is an amenable number.

10289989 is a deficient number, since it is larger than the sum of its proper divisors (14151).

10289989 is an equidigital number, since it uses as much as digits as its factorization.

10289989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14150.

The product of its (nonzero) digits is 93312, while the sum is 46.

The square root of 10289989 is about 3207.8012718995. The cubic root of 10289989 is about 217.5061979121.

The spelling of 10289989 in words is "ten million, two hundred eighty-nine thousand, nine hundred eighty-nine".