10189999 has 4 divisors (see below), whose sum is σ = 10227064. Its totient is φ = 10152936.

The previous prime is 10189969. The next prime is 10190003. The reversal of 10189999 is 99998101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10189999 - 2⁵ = 10189967 is a prime.

It is a Duffinian number.

10189999 is a modest number, since divided by 9999 gives 1018 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10189969) 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, 18117 + ... + 18670.

It is an arithmetic number, because the mean of its divisors is an integer number (2556766).

Almost surely, 2^10189999 is an apocalyptic number.

10189999 is a deficient number, since it is larger than the sum of its proper divisors (37065).

10189999 is an equidigital number, since it uses as much as digits as its factorization.

10189999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37064.

The product of its (nonzero) digits is 52488, while the sum is 46.

The square root of 10189999 is about 3192.1777832696. The cubic root of 10189999 is about 216.7993856162.

It can be divided in two parts, 101899 and 99, that multiplied together give a palindrome (10088001).

The spelling of 10189999 in words is "ten million, one hundred eighty-nine thousand, nine hundred ninety-nine".