3922706921 has 16 divisors (see below), whose sum is σ = 4747330560. Its totient is φ = 3166264080.

The previous prime is 3922706917. The next prime is 3922706927. The reversal of 3922706921 is 1296072293.

It is not a de Polignac number, because 3922706921 - 2² = 3922706917 is a prime.

It is a super-2 number, since 2×3922706921² = 30775259176122600482, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3922706927) 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 15 ways as a sum of consecutive naturals, for example, 66095 + ... + 110516.

It is an arithmetic number, because the mean of its divisors is an integer number (296708160).

Almost surely, 2^3922706921 is an apocalyptic number.

It is an amenable number.

3922706921 is a deficient number, since it is larger than the sum of its proper divisors (824623639).

3922706921 is a wasteful number, since it uses less digits than its factorization.

3922706921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176804.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 3922706921 is about 62631.5169942418. The cubic root of 3922706921 is about 1577.1098853074.

The spelling of 3922706921 in words is "three billion, nine hundred twenty-two million, seven hundred six thousand, nine hundred twenty-one".