4087249 has 4 divisors (see below), whose sum is σ = 4186980. Its totient is φ = 3987520.

The previous prime is 4087229. The next prime is 4087253. The reversal of 4087249 is 9427804.

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 731025 + 3356224 = 855^2 + 1832^2 .

It is a cyclic number.

It is not a de Polignac number, because 4087249 - 2⁵ = 4087217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4087229) 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, 49804 + ... + 49885.

It is an arithmetic number, because the mean of its divisors is an integer number (1046745).

Almost surely, 2^4087249 is an apocalyptic number.

It is an amenable number.

4087249 is a deficient number, since it is larger than the sum of its proper divisors (99731).

4087249 is an equidigital number, since it uses as much as digits as its factorization.

4087249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99730.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 4087249 is about 2021.6945862321. The cubic root of 4087249 is about 159.8859734440.

It can be divided in two parts, 408 and 7249, that multiplied together give a palindrome (2957592).

The spelling of 4087249 in words is "four million, eighty-seven thousand, two hundred forty-nine".