3916716921 has 48 divisors (see below), whose sum is σ = 6608543760. Its totient is φ = 2213130240.

The previous prime is 3916716913. The next prime is 3916716931. The reversal of 3916716921 is 1296176193.

It can be written as a sum of positive squares in 8 ways, for example, as 423906921 + 3492810000 = 20589^2 + 59100^2 .

It is not a de Polignac number, because 3916716921 - 2³ = 3916716913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3916716931) 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 47 ways as a sum of consecutive naturals, for example, 57535 + ... + 105563.

It is an arithmetic number, because the mean of its divisors is an integer number (137677995).

Almost surely, 2^3916716921 is an apocalyptic number.

It is an amenable number.

3916716921 is a deficient number, since it is larger than the sum of its proper divisors (2691826839).

3916716921 is a wasteful number, since it uses less digits than its factorization.

3916716921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48106 (or 48103 counting only the distinct ones).

The product of its digits is 122472, while the sum is 45.

The square root of 3916716921 is about 62583.6793501309. The cubic root of 3916716921 is about 1576.3067238703.

The spelling of 3916716921 in words is "three billion, nine hundred sixteen million, seven hundred sixteen thousand, nine hundred twenty-one".