10399856 has 10 divisors (see below), whose sum is σ = 20149752. Its totient is φ = 5199920.

The previous prime is 10399853. The next prime is 10399877. The reversal of 10399856 is 65899301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10399853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324980 + ... + 325011.

Almost surely, 2^10399856 is an apocalyptic number.

10399856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

10399856 is a deficient number, since it is larger than the sum of its proper divisors (9749896).

10399856 is an equidigital number, since it uses as much as digits as its factorization.

10399856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649999 (or 649993 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 10399856 is about 3224.8807729899. The cubic root of 10399856 is about 218.2775691680.

The spelling of 10399856 in words is "ten million, three hundred ninety-nine thousand, eight hundred fifty-six".