3894804447 has 4 divisors (see below), whose sum is σ = 5193072600. Its totient is φ = 2596536296.

The previous prime is 3894804439. The next prime is 3894804451. The reversal of 3894804447 is 7444084983.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7444084983 = 3 ⋅2481361661.

It is a cyclic number.

It is not a de Polignac number, because 3894804447 - 2³ = 3894804439 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3894804447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3894804497) 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, 649134072 + ... + 649134077.

It is an arithmetic number, because the mean of its divisors is an integer number (1298268150).

Almost surely, 2^3894804447 is an apocalyptic number.

3894804447 is a deficient number, since it is larger than the sum of its proper divisors (1298268153).

3894804447 is a wasteful number, since it uses less digits than its factorization.

3894804447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1298268152.

The product of its (nonzero) digits is 3096576, while the sum is 51.

The square root of 3894804447 is about 62408.3684052067. The cubic root of 3894804447 is about 1573.3616216555.

The spelling of 3894804447 in words is "three billion, eight hundred ninety-four million, eight hundred four thousand, four hundred forty-seven".