10399923 has 12 divisors (see below), whose sum is σ = 15428608. Its totient is φ = 6745680.

The previous prime is 10399919. The next prime is 10399927. The reversal of 10399923 is 32999301.

It is an interprime number because it is at equal distance from previous prime (10399919) and next prime (10399927).

It is not a de Polignac number, because 10399923 - 2² = 10399919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10399927) 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 11 ways as a sum of consecutive naturals, for example, 15283 + ... + 15948.

Almost surely, 2^10399923 is an apocalyptic number.

10399923 is a deficient number, since it is larger than the sum of its proper divisors (5028685).

10399923 is a wasteful number, since it uses less digits than its factorization.

10399923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31274 (or 31271 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 36.

The square root of 10399923 is about 3224.8911609541. The cubic root of 10399923 is about 218.2780379106.

The spelling of 10399923 in words is "ten million, three hundred ninety-nine thousand, nine hundred twenty-three".