3974847 has 4 divisors (see below), whose sum is σ = 5299800. Its totient is φ = 2649896.

The previous prime is 3974833. The next prime is 3974849. The reversal of 3974847 is 7484793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7484793 = 3 ⋅2494931.

It is a cyclic number.

It is not a de Polignac number, because 3974847 - 2⁶ = 3974783 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 3974799 and 3974808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3974849) 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, 662472 + ... + 662477.

It is an arithmetic number, because the mean of its divisors is an integer number (1324950).

Almost surely, 2^3974847 is an apocalyptic number.

3974847 is a deficient number, since it is larger than the sum of its proper divisors (1324953).

3974847 is a wasteful number, since it uses less digits than its factorization.

3974847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324952.

The product of its digits is 169344, while the sum is 42.

The square root of 3974847 is about 1993.7018332740. The cubic root of 3974847 is about 158.4066728262.

The spelling of 3974847 in words is "three million, nine hundred seventy-four thousand, eight hundred forty-seven".