3971029 has 4 divisors (see below), whose sum is σ = 3984876. Its totient is φ = 3957184.

The previous prime is 3971027. The next prime is 3971041. The reversal of 3971029 is 9201793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9201793 = 149 ⋅61757.

It can be written as a sum of positive squares in 2 ways, for example, as 3478225 + 492804 = 1865^2 + 702^2 .

It is a cyclic number.

It is not a de Polignac number, because 3971029 - 2¹ = 3971027 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3971027) 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, 6484 + ... + 7069.

It is an arithmetic number, because the mean of its divisors is an integer number (996219).

Almost surely, 2^3971029 is an apocalyptic number.

It is an amenable number.

3971029 is a deficient number, since it is larger than the sum of its proper divisors (13847).

3971029 is a wasteful number, since it uses less digits than its factorization.

3971029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13846.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 3971029 is about 1992.7440879350. The cubic root of 3971029 is about 158.3559379238.

The spelling of 3971029 in words is "three million, nine hundred seventy-one thousand, twenty-nine".