3912971 has 4 divisors (see below), whose sum is σ = 3919200. Its totient is φ = 3906744.

The previous prime is 3912959. The next prime is 3912973. The reversal of 3912971 is 1792193.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3912971 is a prime.

It is a super-2 number, since 2×3912971² = 30622684093682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3912973) 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, 2051 + ... + 3468.

It is an arithmetic number, because the mean of its divisors is an integer number (979800).

Almost surely, 2^3912971 is an apocalyptic number.

3912971 is a deficient number, since it is larger than the sum of its proper divisors (6229).

3912971 is an equidigital number, since it uses as much as digits as its factorization.

3912971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6228.

The product of its digits is 3402, while the sum is 32.

The square root of 3912971 is about 1978.1231003150. The cubic root of 3912971 is about 157.5804040629.

Adding to 3912971 its sum of digits (32), we get a triangular number (3913003 = T₂₇₉₇).

The spelling of 3912971 in words is "three million, nine hundred twelve thousand, nine hundred seventy-one".