544378069 has 4 divisors (see below), whose sum is σ = 544446220. Its totient is φ = 544309920.

The previous prime is 544378049. The next prime is 544378117. The reversal of 544378069 is 960873445.

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 264485169 + 279892900 = 16263^2 + 16730^2 .

It is a cyclic number.

It is not a de Polignac number, because 544378069 - 2¹³ = 544369877 is a prime.

It is a super-2 number, since 2×544378069² = 592694964016337522, 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 (544378039) 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, 20214 + ... + 38695.

It is an arithmetic number, because the mean of its divisors is an integer number (136111555).

Almost surely, 2^544378069 is an apocalyptic number.

It is an amenable number.

544378069 is a deficient number, since it is larger than the sum of its proper divisors (68151).

544378069 is an equidigital number, since it uses as much as digits as its factorization.

544378069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68150.

The product of its (nonzero) digits is 725760, while the sum is 46.

The square root of 544378069 is about 23331.9109590278. The cubic root of 544378069 is about 816.5200877751.

The spelling of 544378069 in words is "five hundred forty-four million, three hundred seventy-eight thousand, sixty-nine".