80393797444 has 9 divisors (see below), whose sum is σ = 140690137917. Its totient is φ = 40196615184.

The previous prime is 80393797423. The next prime is 80393797447. The reversal of 80393797444 is 44479739308.

The square root of 80393797444 is 283538.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 59310757444 + 21083040000 = 243538^2 + 145200^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80393797447) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 496192 + ... + 637960.

Almost surely, 2^80393797444 is an apocalyptic number.

80393797444 is the 283538-th square number.

It is an amenable number.

80393797444 is a deficient number, since it is larger than the sum of its proper divisors (60296340473).

80393797444 is an frugal number, since it uses more digits than its factorization.

80393797444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283542 (or 141771 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 58.

The spelling of 80393797444 in words is "eighty billion, three hundred ninety-three million, seven hundred ninety-seven thousand, four hundred forty-four".