3921608 has 8 divisors (see below), whose sum is σ = 7353030. Its totient is φ = 1960800.

The previous prime is 3921601. The next prime is 3921637. The reversal of 3921608 is 8061293.

It can be written as a sum of positive squares in only one way, i.e., 2184484 + 1737124 = 1478^2 + 1318^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (3921601) 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 as a sum of consecutive naturals, namely, 245093 + ... + 245108.

Almost surely, 2^3921608 is an apocalyptic number.

It is an amenable number.

3921608 is a deficient number, since it is larger than the sum of its proper divisors (3431422).

3921608 is a wasteful number, since it uses less digits than its factorization.

3921608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490207 (or 490203 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 3921608 is about 1980.3050270097. The cubic root of 3921608 is about 157.6962599171.

The spelling of 3921608 in words is "three million, nine hundred twenty-one thousand, six hundred eight".