4273391 has 2 divisors, whose sum is σ = 4273392. Its totient is φ = 4273390.

The previous prime is 4273387. The next prime is 4273393. The reversal of 4273391 is 1933724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4273391 - 2² = 4273387 is a prime.

Together with 4273393, it forms a pair of twin primes.

It is a Chen prime.

It is a d-powerful number, because it can be written as 4¹¹ + 2 + 7³ + 3⁹ + 3¹⁰ + 9 + 1 .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4273393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2136695 + 2136696.

It is an arithmetic number, because the mean of its divisors is an integer number (2136696).

Almost surely, 2^4273391 is an apocalyptic number.

4273391 is a deficient number, since it is larger than the sum of its proper divisors (1).

4273391 is an equidigital number, since it uses as much as digits as its factorization.

4273391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 29.

The square root of 4273391 is about 2067.2181790996. The cubic root of 4273391 is about 162.2772142293.

It can be divided in two parts, 42733 and 91, that added together give a palindrome (42824).

The spelling of 4273391 in words is "four million, two hundred seventy-three thousand, three hundred ninety-one".