438830789 has 4 divisors (see below), whose sum is σ = 439066956. Its totient is φ = 438594624.

The previous prime is 438830753. The next prime is 438830797. The reversal of 438830789 is 987038834.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37149025 + 401681764 = 6095^2 + 20042^2 .

It is a cyclic number.

It is not a de Polignac number, because 438830789 - 2⁸ = 438830533 is a prime.

It is a super-2 number, since 2×438830789² = 385144922748725042, 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 (438130789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115274 + ... + 119019.

It is an arithmetic number, because the mean of its divisors is an integer number (109766739).

Almost surely, 2^438830789 is an apocalyptic number.

It is an amenable number.

438830789 is a deficient number, since it is larger than the sum of its proper divisors (236167).

438830789 is a wasteful number, since it uses less digits than its factorization.

438830789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236166.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The square root of 438830789 is about 20948.2884503723. The cubic root of 438830789 is about 759.9161893960.

The spelling of 438830789 in words is "four hundred thirty-eight million, eight hundred thirty thousand, seven hundred eighty-nine".