7444400044397 has 4 divisors (see below), whose sum is σ = 7465730703900. Its totient is φ = 7423069384896.

The previous prime is 7444400044387. The next prime is 7444400044481. The reversal of 7444400044397 is 7934400044447.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6420314739556 + 1024085304841 = 2533834^2 + 1011971^2 .

It is a cyclic number.

It is not a de Polignac number, because 7444400044397 - 2¹⁶ = 7444399978861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7444400044307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10665329228 + ... + 10665329925.

It is an arithmetic number, because the mean of its divisors is an integer number (1866432675975).

Almost surely, 2^{7444400044397} is an apocalyptic number.

It is an amenable number.

7444400044397 is a deficient number, since it is larger than the sum of its proper divisors (21330659503).

7444400044397 is a wasteful number, since it uses less digits than its factorization.

7444400044397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21330659502.

The product of its (nonzero) digits is 5419008, while the sum is 50.

Adding to 7444400044397 its sum of digits (50), we get a palindrome (7444400044447).

The spelling of 7444400044397 in words is "seven trillion, four hundred forty-four billion, four hundred million, forty-four thousand, three hundred ninety-seven".