2099434 has 4 divisors (see below), whose sum is σ = 3149154. Its totient is φ = 1049716.

The previous prime is 2099431. The next prime is 2099441. The reversal of 2099434 is 4349902.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4349902 = 2 ⋅2174951.

It can be written as a sum of positive squares in only one way, i.e., 2093809 + 5625 = 1447^2 + 75^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 2099396 and 2099405.

It is not an unprimeable number, because it can be changed into a prime (2099431) 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, 524857 + ... + 524860.

2^2099434 is an apocalyptic number.

2099434 is a deficient number, since it is larger than the sum of its proper divisors (1049720).

2099434 is a wasteful number, since it uses less digits than its factorization.

2099434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049719.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 2099434 is about 1448.9423729051. The cubic root of 2099434 is about 128.0464105791.

The spelling of 2099434 in words is "two million, ninety-nine thousand, four hundred thirty-four".