2279845 has 4 divisors (see below), whose sum is σ = 2735820. Its totient is φ = 1823872.

The previous prime is 2279843. The next prime is 2279857. The reversal of 2279845 is 5489722.

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 432964 + 1846881 = 658^2 + 1359^2 .

It is a cyclic number.

It is not a de Polignac number, because 2279845 - 2¹ = 2279843 is a prime.

It is a d-powerful number, because it can be written as 2¹² + 2¹⁸ + 7³ + 9⁵ + 8² + 4⁵ + 5⁹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2279843) 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, 227980 + ... + 227989.

It is an arithmetic number, because the mean of its divisors is an integer number (683955).

2^2279845 is an apocalyptic number.

It is an amenable number.

2279845 is a deficient number, since it is larger than the sum of its proper divisors (455975).

2279845 is an equidigital number, since it uses as much as digits as its factorization.

2279845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455974.

The product of its digits is 40320, while the sum is 37.

The square root of 2279845 is about 1509.9155605530. The cubic root of 2279845 is about 131.6139046908.

The spelling of 2279845 in words is "two million, two hundred seventy-nine thousand, eight hundred forty-five".