3974517 has 6 divisors (see below), whose sum is σ = 5740982. Its totient is φ = 2649672.

The previous prime is 3974501. The next prime is 3974527. The reversal of 3974517 is 7154793.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3896676 + 77841 = 1974^2 + 279^2 .

It is not a de Polignac number, because 3974517 - 2⁴ = 3974501 is a prime.

It is a Duffinian number.

3974517 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3974527) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 220798 + ... + 220815.

Almost surely, 2^3974517 is an apocalyptic number.

It is an amenable number.

3974517 is a deficient number, since it is larger than the sum of its proper divisors (1766465).

3974517 is a wasteful number, since it uses less digits than its factorization.

3974517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441619 (or 441616 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 3974517 is about 1993.6190709361. The cubic root of 3974517 is about 158.4022889553.

The spelling of 3974517 in words is "three million, nine hundred seventy-four thousand, five hundred seventeen".