2087729 has 4 divisors (see below), whose sum is σ = 2385984. Its totient is φ = 1789476.

The previous prime is 2087717. The next prime is 2087741. The reversal of 2087729 is 9277802.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (2087717) and next prime (2087741).

It is a cyclic number.

It is not a de Polignac number, because 2087729 - 2⁴ = 2087713 is a prime.

It is a super-2 number, since 2×2087729² = 8717224754882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2087759) 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, 149117 + ... + 149130.

It is an arithmetic number, because the mean of its divisors is an integer number (596496).

2^2087729 is an apocalyptic number.

It is an amenable number.

2087729 is a deficient number, since it is larger than the sum of its proper divisors (298255).

2087729 is an equidigital number, since it uses as much as digits as its factorization.

2087729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298254.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 2087729 is about 1444.8975742246. The cubic root of 2087729 is about 127.8080007204.

The spelling of 2087729 in words is "two million, eighty-seven thousand, seven hundred twenty-nine".