4044400045 has 32 divisors (see below), whose sum is σ = 6009493248. Its totient is φ = 2549449728.

The previous prime is 4044399991. The next prime is 4044400049. The reversal of 4044400045 is 5400044404.

It is not a de Polignac number, because 4044400045 - 2¹⁹ = 4043875757 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4044399992 and 4044400019.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4044400049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53454 + ... + 104623.

It is an arithmetic number, because the mean of its divisors is an integer number (187796664).

Almost surely, 2^4044400045 is an apocalyptic number.

It is an amenable number.

4044400045 is a deficient number, since it is larger than the sum of its proper divisors (1965093203).

4044400045 is a wasteful number, since it uses less digits than its factorization.

4044400045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158149.

The product of its (nonzero) digits is 5120, while the sum is 25.

The square root of 4044400045 is about 63595.5976856889. The cubic root of 4044400045 is about 1593.2528432766.

Adding to 4044400045 its reverse (5400044404), we get a palindrome (9444444449).

The spelling of 4044400045 in words is "four billion, forty-four million, four hundred thousand, forty-five".