10399786 has 8 divisors (see below), whose sum is σ = 15617700. Its totient is φ = 5193888.

The previous prime is 10399757. The next prime is 10399789. The reversal of 10399786 is 68799301.

It can be written as a sum of positive squares in 2 ways, for example, as 8590761 + 1809025 = 2931^2 + 1345^2 .

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

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (10399789) 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 in 3 ways as a sum of consecutive naturals, for example, 381 + ... + 4576.

Almost surely, 2^10399786 is an apocalyptic number.

10399786 is a deficient number, since it is larger than the sum of its proper divisors (5217914).

10399786 is a wasteful number, since it uses less digits than its factorization.

10399786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6008.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 10399786 is about 3224.8699198572. The cubic root of 10399786 is about 218.2770794348.

The spelling of 10399786 in words is "ten million, three hundred ninety-nine thousand, seven hundred eighty-six".