438461609 has 4 divisors (see below), whose sum is σ = 440208720. Its totient is φ = 436714500.

The previous prime is 438461599. The next prime is 438461641. The reversal of 438461609 is 906164834.

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.

It is a cyclic number.

It is not a de Polignac number, because 438461609 - 2²⁰ = 437413033 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (438461659) 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, 873179 + ... + 873680.

It is an arithmetic number, because the mean of its divisors is an integer number (110052180).

Almost surely, 2^438461609 is an apocalyptic number.

It is an amenable number.

438461609 is a deficient number, since it is larger than the sum of its proper divisors (1747111).

438461609 is a wasteful number, since it uses less digits than its factorization.

438461609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1747110.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 438461609 is about 20939.4748979052. The cubic root of 438461609 is about 759.7030285944.

The spelling of 438461609 in words is "four hundred thirty-eight million, four hundred sixty-one thousand, six hundred nine".