3971893 has 16 divisors (see below), whose sum is σ = 4464000. Its totient is φ = 3516480.

The previous prime is 3971887. The next prime is 3971899. The reversal of 3971893 is 3981793.

It is an interprime number because it is at equal distance from previous prime (3971887) and next prime (3971899).

It is a cyclic number.

It is not a de Polignac number, because 3971893 - 2⁵ = 3971861 is a prime.

It is a Duffinian number.

Its product of digits (40824) is a multiple of the sum of its prime divisors (252).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3971899) 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 15 ways as a sum of consecutive naturals, for example, 26583 + ... + 26731.

It is an arithmetic number, because the mean of its divisors is an integer number (279000).

Almost surely, 2^3971893 is an apocalyptic number.

It is an amenable number.

3971893 is a deficient number, since it is larger than the sum of its proper divisors (492107).

3971893 is a wasteful number, since it uses less digits than its factorization.

3971893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252.

The product of its digits is 40824, while the sum is 40.

The square root of 3971893 is about 1992.9608626363. The cubic root of 3971893 is about 158.3674219001.

The spelling of 3971893 in words is "three million, nine hundred seventy-one thousand, eight hundred ninety-three".