4263409 has 4 divisors (see below), whose sum is σ = 4268016. Its totient is φ = 4258804.

The previous prime is 4263403. The next prime is 4263421. The reversal of 4263409 is 9043624.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4263409 is a prime.

It is a Duffinian number.

4263409 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4263403) 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, 379 + ... + 2944.

It is an arithmetic number, because the mean of its divisors is an integer number (1067004).

Almost surely, 2^4263409 is an apocalyptic number.

It is an amenable number.

4263409 is a deficient number, since it is larger than the sum of its proper divisors (4607).

4263409 is a wasteful number, since it uses less digits than its factorization.

4263409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4606.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 4263409 is about 2064.8024118545. The cubic root of 4263409 is about 162.1507639829.

The spelling of 4263409 in words is "four million, two hundred sixty-three thousand, four hundred nine".