438716869 has 4 divisors (see below), whose sum is σ = 439426240. Its totient is φ = 438007500.

The previous prime is 438716779. The next prime is 438716891. The reversal of 438716869 is 968617834.

It is a happy number.

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 438716869 - 2¹⁵ = 438684101 is a prime.

It is a super-2 number, since 2×438716869² = 384944982290326322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438716969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353757 + ... + 354994.

It is an arithmetic number, because the mean of its divisors is an integer number (109856560).

Almost surely, 2^438716869 is an apocalyptic number.

It is an amenable number.

438716869 is a deficient number, since it is larger than the sum of its proper divisors (709371).

438716869 is an equidigital number, since it uses as much as digits as its factorization.

438716869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709370.

The product of its digits is 1741824, while the sum is 52.

The square root of 438716869 is about 20945.5691973267. The cubic root of 438716869 is about 759.8504258970.

The spelling of 438716869 in words is "four hundred thirty-eight million, seven hundred sixteen thousand, eight hundred sixty-nine".