3979689 has 8 divisors (see below), whose sum is σ = 6064320. Its totient is φ = 2274096.

The previous prime is 3979669. The next prime is 3979691. The reversal of 3979689 is 9869793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3979689 - 2⁷ = 3979561 is a prime.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (3979639) 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 7 ways as a sum of consecutive naturals, for example, 94734 + ... + 94775.

It is an arithmetic number, because the mean of its divisors is an integer number (758040).

Almost surely, 2^3979689 is an apocalyptic number.

It is an amenable number.

3979689 is a deficient number, since it is larger than the sum of its proper divisors (2084631).

3979689 is a wasteful number, since it uses less digits than its factorization.

3979689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189519.

The product of its digits is 734832, while the sum is 51.

The square root of 3979689 is about 1994.9157876963. The cubic root of 3979689 is about 158.4709682885.

The spelling of 3979689 in words is "three million, nine hundred seventy-nine thousand, six hundred eighty-nine".