3965062021 has 8 divisors (see below), whose sum is σ = 3983445144. Its totient is φ = 3946709760.

The previous prime is 3965062009. The next prime is 3965062103. The reversal of 3965062021 is 1202605693.

It can be written as a sum of positive squares in 4 ways, for example, as 1354976100 + 2610085921 = 36810^2 + 51089^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3965062021 - 2⁹ = 3965061509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3965062001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273081 + ... + 287233.

It is an arithmetic number, because the mean of its divisors is an integer number (497930643).

Almost surely, 2^3965062021 is an apocalyptic number.

It is an amenable number.

3965062021 is a deficient number, since it is larger than the sum of its proper divisors (18383123).

3965062021 is a wasteful number, since it uses less digits than its factorization.

3965062021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15431.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 3965062021 is about 62968.7384421826. The cubic root of 3965062021 is about 1582.7658147887.

The spelling of 3965062021 in words is "three billion, nine hundred sixty-five million, sixty-two thousand, twenty-one".