7444400044447 has 4 divisors (see below), whose sum is σ = 7617525626920. Its totient is φ = 7271274461976.

The previous prime is 7444400044387. The next prime is 7444400044481.

It is a happy number.

7444400044447 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7444400044447 is a prime.

It is a super-3 number, since 3×7444400044447³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7444400044397 and 7444400044406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7444400042447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86562791172 + ... + 86562791257.

It is an arithmetic number, because the mean of its divisors is an integer number (1904381406730).

Almost surely, 2^{7444400044447} is an apocalyptic number.

7444400044447 is a deficient number, since it is larger than the sum of its proper divisors (173125582473).

7444400044447 is a wasteful number, since it uses less digits than its factorization.

7444400044447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173125582472.

The product of its (nonzero) digits is 3211264, while the sum is 46.

It can be divided in two parts, 74444000 and 44447, that added together give a palindrome (74488447).

The spelling of 7444400044447 in words is "seven trillion, four hundred forty-four billion, four hundred million, forty-four thousand, four hundred forty-seven".