2887739 has 8 divisors (see below), whose sum is σ = 3140928. Its totient is φ = 2643840.

The previous prime is 2887721. The next prime is 2887741. The reversal of 2887739 is 9377882.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2887739 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 2887739.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2887789) 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, 1667 + ... + 2924.

It is an arithmetic number, because the mean of its divisors is an integer number (392616).

2^2887739 is an apocalyptic number.

2887739 is a deficient number, since it is larger than the sum of its proper divisors (253189).

2887739 is a wasteful number, since it uses less digits than its factorization.

2887739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4645.

The product of its digits is 169344, while the sum is 44.

The square root of 2887739 is about 1699.3348698829. The cubic root of 2887739 is about 142.4030570768.

The spelling of 2887739 in words is "two million, eight hundred eighty-seven thousand, seven hundred thirty-nine".