3979143 has 24 divisors (see below), whose sum is σ = 6708000. Its totient is φ = 2272032.

The previous prime is 3979141. The next prime is 3979147. The reversal of 3979143 is 3419793.

It is not a de Polignac number, because 3979143 - 2¹ = 3979141 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3979098 and 3979107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3979141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2443 + ... + 3731.

It is an arithmetic number, because the mean of its divisors is an integer number (279500).

Almost surely, 2^3979143 is an apocalyptic number.

3979143 is a deficient number, since it is larger than the sum of its proper divisors (2728857).

3979143 is a wasteful number, since it uses less digits than its factorization.

3979143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316 (or 1299 counting only the distinct ones).

The product of its digits is 20412, while the sum is 36.

The square root of 3979143 is about 1994.7789351204. The cubic root of 3979143 is about 158.4637207283.

The spelling of 3979143 in words is "three million, nine hundred seventy-nine thousand, one hundred forty-three".