4391265 has 16 divisors (see below), whose sum is σ = 7072128. Its totient is φ = 2326656.

The previous prime is 4391263. The next prime is 4391323. The reversal of 4391265 is 5621934.

It is not a de Polignac number, because 4391265 - 2¹ = 4391263 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4391263) 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 15 ways as a sum of consecutive naturals, for example, 1629 + ... + 3381.

It is an arithmetic number, because the mean of its divisors is an integer number (442008).

Almost surely, 2^4391265 is an apocalyptic number.

It is an amenable number.

4391265 is a deficient number, since it is larger than the sum of its proper divisors (2680863).

4391265 is a wasteful number, since it uses less digits than its factorization.

4391265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1928.

The product of its digits is 6480, while the sum is 30.

The square root of 4391265 is about 2095.5345380117. The cubic root of 4391265 is about 163.7557463555.

It can be divided in two parts, 4391 and 265, that added together give a triangular number (4656 = T₉₆).

The spelling of 4391265 in words is "four million, three hundred ninety-one thousand, two hundred sixty-five".