7992391544 has 16 divisors (see below), whose sum is σ = 15075471600. Its totient is φ = 3972265792.

The previous prime is 7992391531. The next prime is 7992391549. The reversal of 7992391544 is 4451932997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7992391549) 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, 2989829 + ... + 2992500.

It is an arithmetic number, because the mean of its divisors is an integer number (942216975).

Almost surely, 2^7992391544 is an apocalyptic number.

It is an amenable number.

7992391544 is a deficient number, since it is larger than the sum of its proper divisors (7083080056).

7992391544 is a wasteful number, since it uses less digits than its factorization.

7992391544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5982502 (or 5982498 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 53.

The square root of 7992391544 is about 89400.1764204076. The cubic root of 7992391544 is about 1999.3657608916.

The spelling of 7992391544 in words is "seven billion, nine hundred ninety-two million, three hundred ninety-one thousand, five hundred forty-four".