3974861 has 4 divisors (see below), whose sum is σ = 4336224. Its totient is φ = 3613500.

The previous prime is 3974849. The next prime is 3974881. The reversal of 3974861 is 1684793.

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.

It is not a de Polignac number, because 3974861 - 2⁶ = 3974797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3974801) 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, 180665 + ... + 180686.

It is an arithmetic number, because the mean of its divisors is an integer number (1084056).

Almost surely, 2^3974861 is an apocalyptic number.

It is an amenable number.

3974861 is a deficient number, since it is larger than the sum of its proper divisors (361363).

3974861 is a wasteful number, since it uses less digits than its factorization.

3974861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361362.

The product of its digits is 36288, while the sum is 38.

The square root of 3974861 is about 1993.7053443275. The cubic root of 3974861 is about 158.4068588033.

The spelling of 3974861 in words is "three million, nine hundred seventy-four thousand, eight hundred sixty-one".