2279021 has 4 divisors (see below), whose sum is σ = 2316444. Its totient is φ = 2241600.

The previous prime is 2279009. The next prime is 2279033. The reversal of 2279021 is 1209722.

2279021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1209722 = 2 ⋅604861.

It is an interprime number because it is at equal distance from previous prime (2279009) and next prime (2279033).

It can be written as a sum of positive squares in 2 ways, for example, as 688900 + 1590121 = 830^2 + 1261^2 .

It is a cyclic number.

It is not a de Polignac number, because 2279021 - 2¹⁸ = 2016877 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 (2279041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18620 + ... + 18741.

It is an arithmetic number, because the mean of its divisors is an integer number (579111).

2^2279021 is an apocalyptic number.

It is an amenable number.

2279021 is a deficient number, since it is larger than the sum of its proper divisors (37423).

2279021 is an equidigital number, since it uses as much as digits as its factorization.

2279021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37422.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 2279021 is about 1509.6426729528. The cubic root of 2279021 is about 131.5980464599.

The spelling of 2279021 in words is "two million, two hundred seventy-nine thousand, twenty-one".