3991348452 has 48 divisors (see below), whose sum is σ = 11462337152. Its totient is φ = 1052663040.

The previous prime is 3991348391. The next prime is 3991348457. The reversal of 3991348452 is 2548431993.

It is not an unprimeable number, because it can be changed into a prime (3991348457) 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, 1826449 + ... + 1828632.

Almost surely, 2^3991348452 is an apocalyptic number.

It is an amenable number.

3991348452 is an abundant number, since it is smaller than the sum of its proper divisors (7470988700).

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

3991348452 is a wasteful number, since it uses less digits than its factorization.

3991348452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3655108 (or 3655106 counting only the distinct ones).

The product of its digits is 933120, while the sum is 48.

The square root of 3991348452 is about 63177.1196874311. The cubic root of 3991348452 is about 1586.2557694990.

The spelling of 3991348452 in words is "three billion, nine hundred ninety-one million, three hundred forty-eight thousand, four hundred fifty-two".