2739609 has 8 divisors (see below), whose sum is σ = 4058720. Its totient is φ = 1826388.

The previous prime is 2739587. The next prime is 2739613. The reversal of 2739609 is 9069372.

It is not a de Polignac number, because 2739609 - 2⁵ = 2739577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2739619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50707 + ... + 50760.

It is an arithmetic number, because the mean of its divisors is an integer number (507340).

2^2739609 is an apocalyptic number.

It is an amenable number.

2739609 is a deficient number, since it is larger than the sum of its proper divisors (1319111).

2739609 is a wasteful number, since it uses less digits than its factorization.

2739609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101476 (or 101470 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 2739609 is about 1655.1764256417. The cubic root of 2739609 is about 139.9252832607.

It can be divided in two parts, 2739 and 609, that multiplied together give a triangular number (1668051 = T₁₈₂₆).

The spelling of 2739609 in words is "two million, seven hundred thirty-nine thousand, six hundred nine".