4263509 has 2 divisors, whose sum is σ = 4263510. Its totient is φ = 4263508.

The previous prime is 4263491. The next prime is 4263527. The reversal of 4263509 is 9053624.

It is a balanced prime because it is at equal distance from previous prime (4263491) and next prime (4263527).

It can be written as a sum of positive squares in only one way, i.e., 4202500 + 61009 = 2050^2 + 247^2 .

It is a cyclic number.

It is not a de Polignac number, because 4263509 - 2⁸ = 4263253 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4263529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2131754 + 2131755.

It is an arithmetic number, because the mean of its divisors is an integer number (2131755).

Almost surely, 2^4263509 is an apocalyptic number.

It is an amenable number.

4263509 is a deficient number, since it is larger than the sum of its proper divisors (1).

4263509 is an equidigital number, since it uses as much as digits as its factorization.

4263509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 4263509 is about 2064.8266271046. The cubic root of 4263509 is about 162.1520317438.

The spelling of 4263509 in words is "four million, two hundred sixty-three thousand, five hundred nine".