2279813 has 2 divisors, whose sum is σ = 2279814. Its totient is φ = 2279812.

The previous prime is 2279807. The next prime is 2279839. The reversal of 2279813 is 3189722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2211169 + 68644 = 1487^2 + 262^2 .

It is a cyclic number.

It is not a de Polignac number, because 2279813 - 2⁶ = 2279749 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2279813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2279843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1139906 + 1139907.

It is an arithmetic number, because the mean of its divisors is an integer number (1139907).

2^2279813 is an apocalyptic number.

It is an amenable number.

2279813 is a deficient number, since it is larger than the sum of its proper divisors (1).

2279813 is an equidigital number, since it uses as much as digits as its factorization.

2279813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 32.

The square root of 2279813 is about 1509.9049638967. The cubic root of 2279813 is about 131.6132889085.

Subtracting 2279813 from its reverse (3189722), we obtain a palindrome (909909).

The spelling of 2279813 in words is "two million, two hundred seventy-nine thousand, eight hundred thirteen".