7991449732 has 48 divisors (see below), whose sum is σ = 16070971392. Its totient is φ = 3406095360.

The previous prime is 7991449717. The next prime is 7991449733. The reversal of 7991449732 is 2379441997.

It is not an unprimeable number, because it can be changed into a prime (7991449733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4642632 + ... + 4644352.

It is an arithmetic number, because the mean of its divisors is an integer number (334811904).

Almost surely, 2^7991449732 is an apocalyptic number.

It is an amenable number.

7991449732 is an abundant number, since it is smaller than the sum of its proper divisors (8079521660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7991449732 is a wasteful number, since it uses less digits than its factorization.

7991449732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2548 (or 2546 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 55.

The square root of 7991449732 is about 89394.9088706958. The cubic root of 7991449732 is about 1999.2872236718.

The spelling of 7991449732 in words is "seven billion, nine hundred ninety-one million, four hundred forty-nine thousand, seven hundred thirty-two".