10899823 has 4 divisors (see below), whose sum is σ = 11890728. Its totient is φ = 9908920.

The previous prime is 10899799. The next prime is 10899829. The reversal of 10899823 is 32899801.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10899823 is a prime.

It is a super-2 number, since 2×10899823² = 237612282862658, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10899829) 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 3 ways as a sum of consecutive naturals, for example, 495436 + ... + 495457.

It is an arithmetic number, because the mean of its divisors is an integer number (2972682).

Almost surely, 2^10899823 is an apocalyptic number.

10899823 is a deficient number, since it is larger than the sum of its proper divisors (990905).

10899823 is an equidigital number, since it uses as much as digits as its factorization.

10899823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990904.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 10899823 is about 3301.4879978579. The cubic root of 10899823 is about 221.7208229434.

The spelling of 10899823 in words is "ten million, eight hundred ninety-nine thousand, eight hundred twenty-three".