3974457 has 4 divisors (see below), whose sum is σ = 5299280. Its totient is φ = 2649636.

The previous prime is 3974441. The next prime is 3974459. The reversal of 3974457 is 7544793.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7544793 = 3 ⋅2514931.

It is not a de Polignac number, because 3974457 - 2⁴ = 3974441 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3974459) 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, 662407 + ... + 662412.

It is an arithmetic number, because the mean of its divisors is an integer number (1324820).

Almost surely, 2^3974457 is an apocalyptic number.

It is an amenable number.

3974457 is a deficient number, since it is larger than the sum of its proper divisors (1324823).

3974457 is a wasteful number, since it uses less digits than its factorization.

3974457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324822.

The product of its digits is 105840, while the sum is 39.

The square root of 3974457 is about 1993.6040228691. The cubic root of 3974457 is about 158.4014918618.

The spelling of 3974457 in words is "three million, nine hundred seventy-four thousand, four hundred fifty-seven".