2279929 has 4 divisors (see below), whose sum is σ = 2286180. Its totient is φ = 2273680.

The previous prime is 2279911. The next prime is 2279933. The reversal of 2279929 is 9299722.

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

It can be written as a sum of positive squares in 2 ways, for example, as 774400 + 1505529 = 880^2 + 1227^2 .

It is a cyclic number.

It is not a de Polignac number, because 2279929 - 2⁵ = 2279897 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

2279929 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2279891 and 2279900.

It is not an unprimeable number, because it can be changed into a prime (2270929) 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, 2542 + ... + 3319.

It is an arithmetic number, because the mean of its divisors is an integer number (571545).

2^2279929 is an apocalyptic number.

It is an amenable number.

2279929 is a deficient number, since it is larger than the sum of its proper divisors (6251).

2279929 is an equidigital number, since it uses as much as digits as its factorization.

2279929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6250.

The product of its digits is 40824, while the sum is 40.

The square root of 2279929 is about 1509.9433764218. The cubic root of 2279929 is about 131.6155210920.

The spelling of 2279929 in words is "two million, two hundred seventy-nine thousand, nine hundred twenty-nine".