4248391 has 4 divisors (see below), whose sum is σ = 4855312. Its totient is φ = 3641472.

The previous prime is 4248389. The next prime is 4248397. The reversal of 4248391 is 1938424.

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 4248391 - 2¹ = 4248389 is a prime.

It is a d-powerful number, because it can be written as 4 + 2¹³ + 4¹¹ + 8⁵ + 3⁸ + 9⁴ + 1 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4248397) 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, 303450 + ... + 303463.

It is an arithmetic number, because the mean of its divisors is an integer number (1213828).

Almost surely, 2^4248391 is an apocalyptic number.

4248391 is a deficient number, since it is larger than the sum of its proper divisors (606921).

4248391 is an equidigital number, since it uses as much as digits as its factorization.

4248391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606920.

The product of its digits is 6912, while the sum is 31.

The square root of 4248391 is about 2061.1625360461. The cubic root of 4248391 is about 161.9601461685.

The spelling of 4248391 in words is "four million, two hundred forty-eight thousand, three hundred ninety-one".