10199881 has 4 divisors (see below), whose sum is σ = 10799892. Its totient is φ = 9599872.

The previous prime is 10199831. The next prime is 10199911. The reversal of 10199881 is 18899101.

It is a happy number.

10199881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2958400 + 7241481 = 1720^2 + 2691^2 .

It is a cyclic number.

It is not a de Polignac number, because 10199881 - 2¹¹ = 10197833 is a prime.

It is a super-2 number, since 2×10199881² = 208075144828322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10199881.

It is not an unprimeable number, because it can be changed into a prime (10199801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 299980 + ... + 300013.

It is an arithmetic number, because the mean of its divisors is an integer number (2699973).

Almost surely, 2^10199881 is an apocalyptic number.

It is an amenable number.

10199881 is a deficient number, since it is larger than the sum of its proper divisors (600011).

10199881 is an equidigital number, since it uses as much as digits as its factorization.

10199881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600010.

The product of its (nonzero) digits is 5184, while the sum is 37.

The square root of 10199881 is about 3193.7252543073. The cubic root of 10199881 is about 216.8694451373.

The spelling of 10199881 in words is "ten million, one hundred ninety-nine thousand, eight hundred eighty-one".