4099647 has 4 divisors (see below), whose sum is σ = 5466200. Its totient is φ = 2733096.

The previous prime is 4099621. The next prime is 4099661. The reversal of 4099647 is 7469904.

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

It is not a de Polignac number, because 4099647 - 2¹⁵ = 4066879 is a prime.

It is a D-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 (4099247) 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, 683272 + ... + 683277.

It is an arithmetic number, because the mean of its divisors is an integer number (1366550).

Almost surely, 2^4099647 is an apocalyptic number.

4099647 is a deficient number, since it is larger than the sum of its proper divisors (1366553).

4099647 is a wasteful number, since it uses less digits than its factorization.

4099647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366552.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 4099647 is about 2024.7585041185. The cubic root of 4099647 is about 160.0474728923.

The spelling of 4099647 in words is "four million, ninety-nine thousand, six hundred forty-seven".