10399915 has 8 divisors (see below), whose sum is σ = 12514320. Its totient is φ = 8296992.

The previous prime is 10399901. The next prime is 10399919. The reversal of 10399915 is 51999301.

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

It is a cyclic number.

It is not a de Polignac number, because 10399915 - 2¹¹ = 10397867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10399919) by changing a digit.

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, 729 + ... + 4618.

It is an arithmetic number, because the mean of its divisors is an integer number (1564290).

Almost surely, 2^10399915 is an apocalyptic number.

10399915 is a deficient number, since it is larger than the sum of its proper divisors (2114405).

10399915 is an equidigital number, since it uses as much as digits as its factorization.

10399915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5741.

The product of its (nonzero) digits is 10935, while the sum is 37.

The square root of 10399915 is about 3224.8899206019. The cubic root of 10399915 is about 218.2779819414.

The spelling of 10399915 in words is "ten million, three hundred ninety-nine thousand, nine hundred fifteen".