3921744449 has 12 divisors (see below), whose sum is σ = 4565563200. Its totient is φ = 3358891368.

The previous prime is 3921744413. The next prime is 3921744451. The reversal of 3921744449 is 9444471293.

It is not a de Polignac number, because 3921744449 - 2²⁴ = 3904967233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3921744469) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34292 + ... + 94970.

It is an arithmetic number, because the mean of its divisors is an integer number (380463600).

Almost surely, 2^3921744449 is an apocalyptic number.

It is an amenable number.

3921744449 is a deficient number, since it is larger than the sum of its proper divisors (643818751).

3921744449 is a wasteful number, since it uses less digits than its factorization.

3921744449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62012 (or 62005 counting only the distinct ones).

The product of its digits is 870912, while the sum is 47.

The square root of 3921744449 is about 62623.8329152728. The cubic root of 3921744449 is about 1576.9808886478.

The spelling of 3921744449 in words is "three billion, nine hundred twenty-one million, seven hundred forty-four thousand, four hundred forty-nine".