7944444497 has 4 divisors (see below), whose sum is σ = 8666666736. Its totient is φ = 7222222260.

The previous prime is 7944444481. The next prime is 7944444509.

It is a happy number.

7944444497 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 7944444497 - 2⁴ = 7944444481 is a prime.

It is a super-2 number, since 2×7944444497² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7944444197) 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, 361111103 + ... + 361111124.

It is an arithmetic number, because the mean of its divisors is an integer number (2166666684).

Almost surely, 2^7944444497 is an apocalyptic number.

It is an amenable number.

7944444497 is a deficient number, since it is larger than the sum of its proper divisors (722222239).

7944444497 is a wasteful number, since it uses less digits than its factorization.

7944444497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722222238.

The product of its digits is 16257024, while the sum is 56.

The square root of 7944444497 is about 89131.6133422929. The cubic root of 7944444497 is about 1995.3596164973.

The spelling of 7944444497 in words is "seven billion, nine hundred forty-four million, four hundred forty-four thousand, four hundred ninety-seven".