2099679 has 8 divisors (see below), whose sum is σ = 2806272. Its totient is φ = 1396440.

The previous prime is 2099677. The next prime is 2099707. The reversal of 2099679 is 9769902.

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

It is not a de Polignac number, because 2099679 - 2¹ = 2099677 is a prime.

2099679 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2099679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2099677) 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, 2002 + ... + 2864.

It is an arithmetic number, because the mean of its divisors is an integer number (350784).

2^2099679 is an apocalyptic number.

2099679 is a deficient number, since it is larger than the sum of its proper divisors (706593).

2099679 is an equidigital number, since it uses as much as digits as its factorization.

2099679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1677.

The product of its (nonzero) digits is 61236, while the sum is 42.

The square root of 2099679 is about 1449.0269148639. The cubic root of 2099679 is about 128.0513913105.

It can be divided in two parts, 20 and 99679, that added together give a palindrome (99699).

The spelling of 2099679 in words is "two million, ninety-nine thousand, six hundred seventy-nine".