2279569 has 2 divisors, whose sum is σ = 2279570. Its totient is φ = 2279568.

The previous prime is 2279567. The next prime is 2279591. The reversal of 2279569 is 9659722.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2016400 + 263169 = 1420^2 + 513^2 .

It is a cyclic number.

It is not a de Polignac number, because 2279569 - 2¹ = 2279567 is a prime.

It is a super-2 number, since 2×2279569² = 10392869651522, which contains 22 as substring.

Together with 2279567, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2279567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1139784 + 1139785.

It is an arithmetic number, because the mean of its divisors is an integer number (1139785).

2^2279569 is an apocalyptic number.

It is an amenable number.

2279569 is a deficient number, since it is larger than the sum of its proper divisors (1).

2279569 is an equidigital number, since it uses as much as digits as its factorization.

2279569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 40.

The square root of 2279569 is about 1509.8241619473. The cubic root of 2279569 is about 131.6085933789.

The spelling of 2279569 in words is "two million, two hundred seventy-nine thousand, five hundred sixty-nine".