4400045 has 16 divisors (see below), whose sum is σ = 5738880. Its totient is φ = 3219264.

The previous prime is 4400041. The next prime is 4400069. The reversal of 4400045 is 5400044.

It is a cyclic number.

It is not a de Polignac number, because 4400045 - 2² = 4400041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4399996 and 4400032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4400041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8792 + ... + 9278.

It is an arithmetic number, because the mean of its divisors is an integer number (358680).

Almost surely, 2^4400045 is an apocalyptic number.

It is an amenable number.

4400045 is a deficient number, since it is larger than the sum of its proper divisors (1338835).

4400045 is a wasteful number, since it uses less digits than its factorization.

4400045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644.

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 4400045 is about 2097.6284227670. The cubic root of 4400045 is about 163.8648127464.

Adding to 4400045 its reverse (5400044), we get a palindrome (9800089).

Subtracting 4400045 from its reverse (5400044), we obtain a palindrome (999999).

The spelling of 4400045 in words is "four million, four hundred thousand, forty-five".