3960606021 has 32 divisors (see below), whose sum is σ = 5449776768. Its totient is φ = 2557670400.

The previous prime is 3960606019. The next prime is 3960606037. The reversal of 3960606021 is 1206060693.

It is a happy number.

It is not a de Polignac number, because 3960606021 - 2¹ = 3960606019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3960606061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3029650 + ... + 3030956.

It is an arithmetic number, because the mean of its divisors is an integer number (170305524).

Almost surely, 2^3960606021 is an apocalyptic number.

It is an amenable number.

3960606021 is a deficient number, since it is larger than the sum of its proper divisors (1489170747).

3960606021 is a wasteful number, since it uses less digits than its factorization.

3960606021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1621.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 3960606021 is about 62933.3458589324. The cubic root of 3960606021 is about 1582.1726800447.

The spelling of 3960606021 in words is "three billion, nine hundred sixty million, six hundred six thousand, twenty-one".