4444444407 has 16 divisors (see below), whose sum is σ = 6383037920. Its totient is φ = 2734497792.

The previous prime is 4444444393. The next prime is 4444444429. The reversal of 4444444407 is 7044444444.

It is not a de Polignac number, because 4444444407 - 2⁶ = 4444444343 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4444444447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 284463 + ... + 299679.

It is an arithmetic number, because the mean of its divisors is an integer number (398939870).

Almost surely, 2^4444444407 is an apocalyptic number.

4444444407 is a deficient number, since it is larger than the sum of its proper divisors (1938593513).

4444444407 is a wasteful number, since it uses less digits than its factorization.

4444444407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22722.

The product of its (nonzero) digits is 458752, while the sum is 39.

The square root of 4444444407 is about 66666.6663858333. Note that the first 3 decimals coincide. The cubic root of 4444444407 is about 1644.1413782697.

The spelling of 4444444407 in words is "four billion, four hundred forty-four million, four hundred forty-four thousand, four hundred seven".