2739287 has 4 divisors (see below), whose sum is σ = 2883480. Its totient is φ = 2595096.

The previous prime is 2739283. The next prime is 2739293. The reversal of 2739287 is 7829372.

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

It is not a de Polignac number, because 2739287 - 2² = 2739283 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2739287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2739281) 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, 72068 + ... + 72105.

It is an arithmetic number, because the mean of its divisors is an integer number (720870).

2^2739287 is an apocalyptic number.

2739287 is a deficient number, since it is larger than the sum of its proper divisors (144193).

2739287 is a wasteful number, since it uses less digits than its factorization.

2739287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144192.

The product of its digits is 42336, while the sum is 38.

The square root of 2739287 is about 1655.0791521858. The cubic root of 2739287 is about 139.9198010056.

The spelling of 2739287 in words is "two million, seven hundred thirty-nine thousand, two hundred eighty-seven".