4444383777438 has 64 divisors (see below), whose sum is σ = 9944950118400. Its totient is φ = 1312465563360.

The previous prime is 4444383777419. The next prime is 4444383777461. The reversal of 4444383777438 is 8347773834444.

It is a super-2 number, since 2×4444383777438² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 537748 + ... + 3029511.

It is an arithmetic number, because the mean of its divisors is an integer number (155389845600).

Almost surely, 2^{4444383777438} is an apocalyptic number.

4444383777438 is an abundant number, since it is smaller than the sum of its proper divisors (5500566340962).

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

4444383777438 is a wasteful number, since it uses less digits than its factorization.

4444383777438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3567757.

The product of its digits is 606928896, while the sum is 66.

The spelling of 4444383777438 in words is "four trillion, four hundred forty-four billion, three hundred eighty-three million, seven hundred seventy-seven thousand, four hundred thirty-eight".