3900121100 has 36 divisors (see below), whose sum is σ = 8643342624. Its totient is φ = 1526854080.

The previous prime is 3900121087. The next prime is 3900121139. The reversal of 3900121100 is 11210093.

It is a happy number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 410207 + ... + 419606.

Almost surely, 2^3900121100 is an apocalyptic number.

It is an amenable number.

3900121100 is an abundant number, since it is smaller than the sum of its proper divisors (4743221524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3900121100 is a wasteful number, since it uses less digits than its factorization.

3900121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829874 (or 829867 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 3900121100 is about 62450.9495524287. The cubic root of 3900121100 is about 1574.0772086660.

Adding to 3900121100 its reverse (11210093), we get a palindrome (3911331193).

It can be divided in two parts, 3900 and 121100, that added together give a cube (125000 = 50³).

The spelling of 3900121100 in words is "three billion, nine hundred million, one hundred twenty-one thousand, one hundred".