3908121 has 16 divisors (see below), whose sum is σ = 6000000. Its totient is φ = 2216448.

The previous prime is 3908119. The next prime is 3908131. The reversal of 3908121 is 1218093.

3908121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3908121 - 2¹ = 3908119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3908091 and 3908100.

It is not an unprimeable number, because it can be changed into a prime (3908131) 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 15 ways as a sum of consecutive naturals, for example, 2505 + ... + 3753.

It is an arithmetic number, because the mean of its divisors is an integer number (375000).

Almost surely, 2^3908121 is an apocalyptic number.

It is an amenable number.

3908121 is a deficient number, since it is larger than the sum of its proper divisors (2091879).

3908121 is a wasteful number, since it uses less digits than its factorization.

3908121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 3908121 is about 1976.8968106606. The cubic root of 3908121 is about 157.5152718877.

The spelling of 3908121 in words is "three million, nine hundred eight thousand, one hundred twenty-one".