3942679 has 4 divisors (see below), whose sum is σ = 4245976. Its totient is φ = 3639384.

The previous prime is 3942677. The next prime is 3942721. The reversal of 3942679 is 9762493.

3942679 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9762493 = 13 ⋅750961.

It is a cyclic number.

It is not a de Polignac number, because 3942679 - 2¹ = 3942677 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 (3942677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151629 + ... + 151654.

It is an arithmetic number, because the mean of its divisors is an integer number (1061494).

Almost surely, 2^3942679 is an apocalyptic number.

3942679 is a deficient number, since it is larger than the sum of its proper divisors (303297).

3942679 is a wasteful number, since it uses less digits than its factorization.

3942679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303296.

The product of its digits is 81648, while the sum is 40.

The square root of 3942679 is about 1985.6180398052. The cubic root of 3942679 is about 157.9781922580.

The spelling of 3942679 in words is "three million, nine hundred forty-two thousand, six hundred seventy-nine".