10309889 has 2 divisors, whose sum is σ = 10309890. Its totient is φ = 10309888.

The previous prime is 10309883. The next prime is 10309891. The reversal of 10309889 is 98890301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8850625 + 1459264 = 2975^2 + 1208^2 .

It is an emirp because it is prime and its reverse (98890301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10309889 - 2¹² = 10305793 is a prime.

It is a super-2 number, since 2×10309889² = 212587622384642, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 10309891, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (10309883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5154944 + 5154945.

It is an arithmetic number, because the mean of its divisors is an integer number (5154945).

Almost surely, 2^10309889 is an apocalyptic number.

It is an amenable number.

10309889 is a deficient number, since it is larger than the sum of its proper divisors (1).

10309889 is an equidigital number, since it uses as much as digits as its factorization.

10309889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 10309889 is about 3210.9015867821. The cubic root of 10309889 is about 217.6463207082.

The spelling of 10309889 in words is "ten million, three hundred nine thousand, eight hundred eighty-nine".