4249387 has 4 divisors (see below), whose sum is σ = 4386496. Its totient is φ = 4112280.

The previous prime is 4249361. The next prime is 4249391. The reversal of 4249387 is 7839424.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4249387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4249307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68508 + ... + 68569.

It is an arithmetic number, because the mean of its divisors is an integer number (1096624).

Almost surely, 2^4249387 is an apocalyptic number.

4249387 is a deficient number, since it is larger than the sum of its proper divisors (137109).

4249387 is a wasteful number, since it uses less digits than its factorization.

4249387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137108.

The product of its digits is 48384, while the sum is 37.

The square root of 4249387 is about 2061.4041331093. The cubic root of 4249387 is about 161.9728019167.

Adding to 4249387 its sum of digits (37), we get a palindrome (4249424).

The spelling of 4249387 in words is "four million, two hundred forty-nine thousand, three hundred eighty-seven".