2087749 has 4 divisors (see below), whose sum is σ = 2095564. Its totient is φ = 2079936.

The previous prime is 2087741. The next prime is 2087759. The reversal of 2087749 is 9477802.

It is a happy number.

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 611524 + 1476225 = 782^2 + 1215^2 .

It is a cyclic number.

It is not a de Polignac number, because 2087749 - 2³ = 2087741 is a prime.

It is a Duffinian number.

2087749 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2087741) 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, 3492 + ... + 4045.

It is an arithmetic number, because the mean of its divisors is an integer number (523891).

2^2087749 is an apocalyptic number.

It is an amenable number.

2087749 is a deficient number, since it is larger than the sum of its proper divisors (7815).

2087749 is an equidigital number, since it uses as much as digits as its factorization.

2087749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7814.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 2087749 is about 1444.9044951138. The cubic root of 2087749 is about 127.8084088436.

The spelling of 2087749 in words is "two million, eighty-seven thousand, seven hundred forty-nine".