10198009 has 4 divisors (see below), whose sum is σ = 10435216. Its totient is φ = 9960804.

The previous prime is 10197997. The next prime is 10198021. The reversal of 10198009 is 90089101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (10197997) and next prime (10198021).

It is a cyclic number.

It is not a de Polignac number, because 10198009 - 2⁹ = 10197497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10198049) 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, 118539 + ... + 118624.

It is an arithmetic number, because the mean of its divisors is an integer number (2608804).

Almost surely, 2^10198009 is an apocalyptic number.

It is an amenable number.

10198009 is a deficient number, since it is larger than the sum of its proper divisors (237207).

10198009 is an equidigital number, since it uses as much as digits as its factorization.

10198009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237206.

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 10198009 is about 3193.4321661811. The cubic root of 10198009 is about 216.8561768635.

The spelling of 10198009 in words is "ten million, one hundred ninety-eight thousand, nine".