3902221973 has 32 divisors (see below), whose sum is σ = 4541040000. Its totient is φ = 3321077760.

The previous prime is 3902221963. The next prime is 3902221987. The reversal of 3902221973 is 3791222093.

3902221973 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3902221973 - 2¹⁶ = 3902156437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3902221903) 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 31 ways as a sum of consecutive naturals, for example, 3123653 + ... + 3124901.

It is an arithmetic number, because the mean of its divisors is an integer number (141907500).

Almost surely, 2^3902221973 is an apocalyptic number.

It is an amenable number.

3902221973 is a deficient number, since it is larger than the sum of its proper divisors (638818027).

3902221973 is a wasteful number, since it uses less digits than its factorization.

3902221973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 3902221973 is about 62467.7674725134. The cubic root of 3902221973 is about 1574.3597932849.

The spelling of 3902221973 in words is "three billion, nine hundred two million, two hundred twenty-one thousand, nine hundred seventy-three".