2273709 has 4 divisors (see below), whose sum is σ = 3031616. Its totient is φ = 1515804.

The previous prime is 2273701. The next prime is 2273729. The reversal of 2273709 is 9073722.

2273709 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2273709 - 2³ = 2273701 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2273701) 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, 378949 + ... + 378954.

It is an arithmetic number, because the mean of its divisors is an integer number (757904).

2^2273709 is an apocalyptic number.

It is an amenable number.

2273709 is a deficient number, since it is larger than the sum of its proper divisors (757907).

2273709 is an equidigital number, since it uses as much as digits as its factorization.

2273709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757906.

The product of its (nonzero) digits is 5292, while the sum is 30.

The square root of 2273709 is about 1507.8822898356. The cubic root of 2273709 is about 131.4957228967.

The spelling of 2273709 in words is "two million, two hundred seventy-three thousand, seven hundred nine".