3979531 has 4 divisors (see below), whose sum is σ = 4189000. Its totient is φ = 3770064.

The previous prime is 3979523. The next prime is 3979543. The reversal of 3979531 is 1359793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1359793 = 277 ⋅4909.

It is a cyclic number.

It is not a de Polignac number, because 3979531 - 2³ = 3979523 is a prime.

It is a super-2 number, since 2×3979531² = 31673333959922, which contains 22 as substring.

It is a Duffinian number.

3979531 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3979511) 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, 104706 + ... + 104743.

It is an arithmetic number, because the mean of its divisors is an integer number (1047250).

Almost surely, 2^3979531 is an apocalyptic number.

3979531 is a deficient number, since it is larger than the sum of its proper divisors (209469).

3979531 is a wasteful number, since it uses less digits than its factorization.

3979531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209468.

The product of its digits is 25515, while the sum is 37.

The square root of 3979531 is about 1994.8761866341. The cubic root of 3979531 is about 158.4688710773.

The spelling of 3979531 in words is "three million, nine hundred seventy-nine thousand, five hundred thirty-one".