4387243 has 4 divisors (see below), whose sum is σ = 5014000. Its totient is φ = 3760488.

The previous prime is 4387231. The next prime is 4387249. The reversal of 4387243 is 3427834.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 4387243 - 2⁵ = 4387211 is a prime.

It is a super-3 number, since 3×4387243³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a d-powerful number, because it can be written as 4⁵ + 3⁸ + 8 + 7 + 2¹³ + 4¹¹ + 3¹¹ .

It is a Duffinian number.

4387243 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4387249) 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, 313368 + ... + 313381.

It is an arithmetic number, because the mean of its divisors is an integer number (1253500).

Almost surely, 2^4387243 is an apocalyptic number.

4387243 is a deficient number, since it is larger than the sum of its proper divisors (626757).

4387243 is an equidigital number, since it uses as much as digits as its factorization.

4387243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626756.

The product of its digits is 16128, while the sum is 31.

The square root of 4387243 is about 2094.5746584927. The cubic root of 4387243 is about 163.7057359526.

The spelling of 4387243 in words is "four million, three hundred eighty-seven thousand, two hundred forty-three".