10389999 has 4 divisors (see below), whose sum is σ = 13853336. Its totient is φ = 6926664.

The previous prime is 10389983. The next prime is 10390013. The reversal of 10389999 is 99998301.

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

It is not a de Polignac number, because 10389999 - 2⁴ = 10389983 is a prime.

It is a Duffinian number.

10389999 is a modest number, since divided by 9999 gives 1038 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10319999) 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, 1731664 + ... + 1731669.

It is an arithmetic number, because the mean of its divisors is an integer number (3463334).

Almost surely, 2^10389999 is an apocalyptic number.

10389999 is a deficient number, since it is larger than the sum of its proper divisors (3463337).

10389999 is an equidigital number, since it uses as much as digits as its factorization.

10389999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3463336.

The product of its (nonzero) digits is 157464, while the sum is 48.

The square root of 10389999 is about 3223.3521371392. The cubic root of 10389999 is about 218.2085860940.

The spelling of 10389999 in words is "ten million, three hundred eighty-nine thousand, nine hundred ninety-nine".