4240387 has 8 divisors (see below), whose sum is σ = 4386816. Its totient is φ = 4096392.

The previous prime is 4240381. The next prime is 4240399. The reversal of 4240387 is 7830424.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4240387 is a prime.

It is a Duffinian number.

4240387 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4240381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3358 + ... + 4444.

It is an arithmetic number, because the mean of its divisors is an integer number (548352).

Almost surely, 2^4240387 is an apocalyptic number.

4240387 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

4240387 is a deficient number, since it is larger than the sum of its proper divisors (146429).

4240387 is a wasteful number, since it uses less digits than its factorization.

4240387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 4240387 is about 2059.2199979604. The cubic root of 4240387 is about 161.8583708563.

It can be divided in two parts, 424038 and 7, that multiplied together give a triangular number (2968266 = T₂₄₃₆).

The spelling of 4240387 in words is "four million, two hundred forty thousand, three hundred eighty-seven".