3974605 has 4 divisors (see below), whose sum is σ = 4769532. Its totient is φ = 3179680.

The previous prime is 3974567. The next prime is 3974609. The reversal of 3974605 is 5064793.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 537289 + 3437316 = 733^2 + 1854^2 .

It is not a de Polignac number, because 3974605 - 2⁹ = 3974093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3974609) 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 3 ways as a sum of consecutive naturals, for example, 397456 + ... + 397465.

It is an arithmetic number, because the mean of its divisors is an integer number (1192383).

Almost surely, 2^3974605 is an apocalyptic number.

It is an amenable number.

3974605 is a deficient number, since it is larger than the sum of its proper divisors (794927).

3974605 is an equidigital number, since it uses as much as digits as its factorization.

3974605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794926.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 3974605 is about 1993.6411412288. The cubic root of 3974605 is about 158.4034580113.

The spelling of 3974605 in words is "three million, nine hundred seventy-four thousand, six hundred five".