4099979 has 8 divisors (see below), whose sum is σ = 4456032. Its totient is φ = 3749760.

The previous prime is 4099961. The next prime is 4099981. The reversal of 4099979 is 9799904.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4099979 - 2⁸ = 4099723 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4099679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74 + ... + 2864.

It is an arithmetic number, because the mean of its divisors is an integer number (557004).

Almost surely, 2^4099979 is an apocalyptic number.

4099979 is a deficient number, since it is larger than the sum of its proper divisors (356053).

4099979 is a wasteful number, since it uses less digits than its factorization.

4099979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2917.

The product of its (nonzero) digits is 183708, while the sum is 47.

The square root of 4099979 is about 2024.8404875446. The cubic root of 4099979 is about 160.0517931282.

The spelling of 4099979 in words is "four million, ninety-nine thousand, nine hundred seventy-nine".