2044663405 has 4 divisors (see below), whose sum is σ = 2453596092. Its totient is φ = 1635730720.

The previous prime is 2044663381. The next prime is 2044663409. The reversal of 2044663405 is 5043664402.

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 474760521 + 1569902884 = 21789^2 + 39622^2 .

It is not a de Polignac number, because 2044663405 - 2¹¹ = 2044661357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2044663409) 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, 204466336 + ... + 204466345.

It is an arithmetic number, because the mean of its divisors is an integer number (613399023).

Almost surely, 2^2044663405 is an apocalyptic number.

It is an amenable number.

2044663405 is a deficient number, since it is larger than the sum of its proper divisors (408932687).

2044663405 is an equidigital number, since it uses as much as digits as its factorization.

2044663405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408932686.

The product of its (nonzero) digits is 69120, while the sum is 34.

The square root of 2044663405 is about 45217.9544539556. The cubic root of 2044663405 is about 1269.2308163957.

The spelling of 2044663405 in words is "two billion, forty-four million, six hundred sixty-three thousand, four hundred five".