3914986121 has 4 divisors (see below), whose sum is σ = 3915142212. Its totient is φ = 3914830032.

The previous prime is 3914986111. The next prime is 3914986133. The reversal of 3914986121 is 1216894193.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1230606400 + 2684379721 = 35080^2 + 51811^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3914986121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3914986111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30950 + ... + 93743.

It is an arithmetic number, because the mean of its divisors is an integer number (978785553).

Almost surely, 2^3914986121 is an apocalyptic number.

It is an amenable number.

3914986121 is a deficient number, since it is larger than the sum of its proper divisors (156091).

3914986121 is a wasteful number, since it uses less digits than its factorization.

3914986121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156090.

The product of its digits is 93312, while the sum is 44.

The square root of 3914986121 is about 62569.8499358916. The cubic root of 3914986121 is about 1576.0744993052.

The spelling of 3914986121 in words is "three billion, nine hundred fourteen million, nine hundred eighty-six thousand, one hundred twenty-one".