2099924 has 6 divisors (see below), whose sum is σ = 3674874. Its totient is φ = 1049960.

The previous prime is 2099921. The next prime is 2099927. The reversal of 2099924 is 4299902.

It is an interprime number because it is at equal distance from previous prime (2099921) and next prime (2099927).

It can be written as a sum of positive squares in only one way, i.e., 1488400 + 611524 = 1220^2 + 782^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2099921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262487 + ... + 262494.

It is an arithmetic number, because the mean of its divisors is an integer number (612479).

2^2099924 is an apocalyptic number.

It is an amenable number.

2099924 is a deficient number, since it is larger than the sum of its proper divisors (1574950).

2099924 is a wasteful number, since it uses less digits than its factorization.

2099924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524985 (or 524983 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 2099924 is about 1449.1114518904. Note that the first 3 decimals coincide. The cubic root of 2099924 is about 128.0563716545.

The spelling of 2099924 in words is "two million, ninety-nine thousand, nine hundred twenty-four".