3939658 has 4 divisors (see below), whose sum is σ = 5909490. Its totient is φ = 1969828.

The previous prime is 3939641. The next prime is 3939671. The reversal of 3939658 is 8569393.

3939658 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.

It can be written as a sum of positive squares in only one way, i.e., 2152089 + 1787569 = 1467^2 + 1337^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 984913 + ... + 984916.

Almost surely, 2^3939658 is an apocalyptic number.

3939658 is a deficient number, since it is larger than the sum of its proper divisors (1969832).

3939658 is a wasteful number, since it uses less digits than its factorization.

3939658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1969831.

The product of its digits is 174960, while the sum is 43.

The square root of 3939658 is about 1984.8571737029. The cubic root of 3939658 is about 157.9378327236.

The spelling of 3939658 in words is "three million, nine hundred thirty-nine thousand, six hundred fifty-eight".