2739445 has 4 divisors (see below), whose sum is σ = 3287340. Its totient is φ = 2191552.

The previous prime is 2739437. The next prime is 2739479. The reversal of 2739445 is 5449372.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2140369 + 599076 = 1463^2 + 774^2 .

It is a cyclic number.

It is not a de Polignac number, because 2739445 - 2³ = 2739437 is a prime.

It is a super-3 number, since 3×2739445³ = 61674979133383638375, which contains 333 as substring.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2739445.

It is a congruent number.

It is an unprimeable number.

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, 273940 + ... + 273949.

It is an arithmetic number, because the mean of its divisors is an integer number (821835).

2^2739445 is an apocalyptic number.

It is an amenable number.

2739445 is a deficient number, since it is larger than the sum of its proper divisors (547895).

2739445 is an equidigital number, since it uses as much as digits as its factorization.

2739445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547894.

The product of its digits is 30240, while the sum is 34.

The square root of 2739445 is about 1655.1268833537. The cubic root of 2739445 is about 139.9224911099.

The spelling of 2739445 in words is "two million, seven hundred thirty-nine thousand, four hundred forty-five".