3847738 has 4 divisors (see below), whose sum is σ = 5771610. Its totient is φ = 1923868.

The previous prime is 3847721. The next prime is 3847777. The reversal of 3847738 is 8377483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8377483 = 337 ⋅24859.

It can be written as a sum of positive squares in only one way, i.e., 1951609 + 1896129 = 1397^2 + 1377^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 3847738.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 961933 + ... + 961936.

Almost surely, 2^3847738 is an apocalyptic number.

3847738 is a deficient number, since it is larger than the sum of its proper divisors (1923872).

3847738 is a wasteful number, since it uses less digits than its factorization.

3847738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1923871.

The product of its digits is 112896, while the sum is 40.

The square root of 3847738 is about 1961.5651913714. The cubic root of 3847738 is about 156.6998199542.

The spelling of 3847738 in words is "three million, eight hundred forty-seven thousand, seven hundred thirty-eight".