2721269 has 4 divisors (see below), whose sum is σ = 2733696. Its totient is φ = 2708844.

The previous prime is 2721259. The next prime is 2721307. The reversal of 2721269 is 9621272.

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 a cyclic number.

It is not a de Polignac number, because 2721269 - 2⁸ = 2721013 is a prime.

It is a super-2 number, since 2×2721269² = 14810609940722, which contains 22 as substring.

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 (2721259) 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, 5879 + ... + 6324.

It is an arithmetic number, because the mean of its divisors is an integer number (683424).

2^2721269 is an apocalyptic number.

It is an amenable number.

2721269 is a deficient number, since it is larger than the sum of its proper divisors (12427).

2721269 is a wasteful number, since it uses less digits than its factorization.

2721269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12426.

The product of its digits is 3024, while the sum is 29.

The square root of 2721269 is about 1649.6269275203. The cubic root of 2721269 is about 139.6123459605.

The spelling of 2721269 in words is "two million, seven hundred twenty-one thousand, two hundred sixty-nine".