3969143 has 16 divisors (see below), whose sum is σ = 4445280. Its totient is φ = 3526656.

The previous prime is 3969137. The next prime is 3969151. The reversal of 3969143 is 3419693.

It is a cyclic number.

It is not a de Polignac number, because 3969143 - 2¹⁴ = 3952759 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 (3969193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40871 + ... + 40967.

It is an arithmetic number, because the mean of its divisors is an integer number (277830).

Almost surely, 2^3969143 is an apocalyptic number.

3969143 is a deficient number, since it is larger than the sum of its proper divisors (476137).

3969143 is a wasteful number, since it uses less digits than its factorization.

3969143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226.

The product of its digits is 17496, while the sum is 35.

The square root of 3969143 is about 1992.2708149245. The cubic root of 3969143 is about 158.3308641043.

The spelling of 3969143 in words is "three million, nine hundred sixty-nine thousand, one hundred forty-three".