10399505 has 8 divisors (see below), whose sum is σ = 12529512. Its totient is φ = 8286208.

The previous prime is 10399451. The next prime is 10399531. The reversal of 10399505 is 50599301.

10399505 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3519376 + 6880129 = 1876^2 + 2623^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10399505 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2762 + ... + 5331.

It is an arithmetic number, because the mean of its divisors is an integer number (1566189).

Almost surely, 2^10399505 is an apocalyptic number.

It is an amenable number.

10399505 is a deficient number, since it is larger than the sum of its proper divisors (2130007).

10399505 is an equidigital number, since it uses as much as digits as its factorization.

10399505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8355.

The product of its (nonzero) digits is 6075, while the sum is 32.

The square root of 10399505 is about 3224.8263519142. The cubic root of 10399505 is about 218.2751134837.

The spelling of 10399505 in words is "ten million, three hundred ninety-nine thousand, five hundred five".