2709489 has 4 divisors (see below), whose sum is σ = 3612656. Its totient is φ = 1806324.

The previous prime is 2709481. The next prime is 2709491. The reversal of 2709489 is 9849072.

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 2709489 - 2³ = 2709481 is a prime.

It is a super-2 number, since 2×2709489² = 14682661282242, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2709481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 451579 + ... + 451584.

It is an arithmetic number, because the mean of its divisors is an integer number (903164).

2^2709489 is an apocalyptic number.

It is an amenable number.

2709489 is a deficient number, since it is larger than the sum of its proper divisors (903167).

2709489 is an equidigital number, since it uses as much as digits as its factorization.

2709489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903166.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 2709489 is about 1646.0525508015. The cubic root of 2709489 is about 139.4106003424.

The spelling of 2709489 in words is "two million, seven hundred nine thousand, four hundred eighty-nine".