4099786 has 4 divisors (see below), whose sum is σ = 6149682. Its totient is φ = 2049892.

The previous prime is 4099729. The next prime is 4099789. The reversal of 4099786 is 6879904.

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

It can be written as a sum of positive squares in only one way, i.e., 2499561 + 1600225 = 1581^2 + 1265^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (4099789) 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 as a sum of consecutive naturals, namely, 1024945 + ... + 1024948.

Almost surely, 2^4099786 is an apocalyptic number.

4099786 is a deficient number, since it is larger than the sum of its proper divisors (2049896).

4099786 is a wasteful number, since it uses less digits than its factorization.

4099786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2049895.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 4099786 is about 2024.7928289087. The cubic root of 4099786 is about 160.0492816942.

The spelling of 4099786 in words is "four million, ninety-nine thousand, seven hundred eighty-six".