438820369 has 8 divisors (see below), whose sum is σ = 472930920. Its totient is φ = 404760576.

The previous prime is 438820351. The next prime is 438820379. The reversal of 438820369 is 963028834.

It can be written as a sum of positive squares in 4 ways, for example, as 462400 + 438357969 = 680^2 + 20937^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 438820369 - 2¹⁷ = 438689297 is a prime.

It is a super-2 number, since 2×438820369² = 385126632498592322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (438820309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6339 + ... + 30295.

It is an arithmetic number, because the mean of its divisors is an integer number (59116365).

Almost surely, 2^438820369 is an apocalyptic number.

It is an amenable number.

438820369 is a deficient number, since it is larger than the sum of its proper divisors (34110551).

438820369 is a wasteful number, since it uses less digits than its factorization.

438820369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25379.

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 438820369 is about 20948.0397412264. The cubic root of 438820369 is about 759.9101746332.

The spelling of 438820369 in words is "four hundred thirty-eight million, eight hundred twenty thousand, three hundred sixty-nine".