3917141921 has 32 divisors (see below), whose sum is σ = 5219500032. Its totient is φ = 2845820160.

The previous prime is 3917141909. The next prime is 3917141929. The reversal of 3917141921 is 1291417193.

It is a cyclic number.

It is not a de Polignac number, because 3917141921 - 2¹⁰ = 3917140897 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3917141929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 126080 + ... + 154046.

It is an arithmetic number, because the mean of its divisors is an integer number (163109376).

Almost surely, 2^3917141921 is an apocalyptic number.

It is an amenable number.

3917141921 is a deficient number, since it is larger than the sum of its proper divisors (1302358111).

3917141921 is a wasteful number, since it uses less digits than its factorization.

3917141921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28109.

The product of its digits is 13608, while the sum is 38.

The square root of 3917141921 is about 62587.0747119563. The cubic root of 3917141921 is about 1576.3637364263.

The spelling of 3917141921 in words is "three billion, nine hundred seventeen million, one hundred forty-one thousand, nine hundred twenty-one".