2129679 has 8 divisors (see below), whose sum is σ = 3155120. Its totient is φ = 1419768.

The previous prime is 2129671. The next prime is 2129689. The reversal of 2129679 is 9769212.

It is not a de Polignac number, because 2129679 - 2³ = 2129671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129671) 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, 39412 + ... + 39465.

It is an arithmetic number, because the mean of its divisors is an integer number (394390).

2^2129679 is an apocalyptic number.

2129679 is a deficient number, since it is larger than the sum of its proper divisors (1025441).

2129679 is an equidigital number, since it uses as much as digits as its factorization.

2129679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78886 (or 78880 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 2129679 is about 1459.3419750011. The cubic root of 2129679 is about 128.6583713529.

The spelling of 2129679 in words is "two million, one hundred twenty-nine thousand, six hundred seventy-nine".