2044443402 has 40 divisors (see below), whose sum is σ = 4643848836. Its totient is φ = 672141888.

The previous prime is 2044443391. The next prime is 2044443407. The reversal of 2044443402 is 2043444402.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1999967841 + 44475561 = 44721^2 + 6669^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2044443407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 74613 + ... + 98264.

Almost surely, 2^2044443402 is an apocalyptic number.

2044443402 is an abundant number, since it is smaller than the sum of its proper divisors (2599405434).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2044443402 is a wasteful number, since it uses less digits than its factorization.

2044443402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172964 (or 172955 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

The square root of 2044443402 is about 45215.5216933300. The cubic root of 2044443402 is about 1269.1852922599.

Adding to 2044443402 its reverse (2043444402), we get a palindrome (4087887804).

The spelling of 2044443402 in words is "two billion, forty-four million, four hundred forty-three thousand, four hundred two".