4099971 has 4 divisors (see below), whose sum is σ = 5466632. Its totient is φ = 2733312.

The previous prime is 4099961. The next prime is 4099981. The reversal of 4099971 is 1799904.

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

It is an interprime number because it is at equal distance from previous prime (4099961) and next prime (4099981).

It is not a de Polignac number, because 4099971 - 2¹¹ = 4097923 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4099961) 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 in 3 ways as a sum of consecutive naturals, for example, 683326 + ... + 683331.

It is an arithmetic number, because the mean of its divisors is an integer number (1366658).

Almost surely, 2^4099971 is an apocalyptic number.

4099971 is a deficient number, since it is larger than the sum of its proper divisors (1366661).

4099971 is a wasteful number, since it uses less digits than its factorization.

4099971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366660.

The product of its (nonzero) digits is 20412, while the sum is 39.

The square root of 4099971 is about 2024.8385120794. The cubic root of 4099971 is about 160.0516890289.

The spelling of 4099971 in words is "four million, ninety-nine thousand, nine hundred seventy-one".