4020856337 has 8 divisors (see below), whose sum is σ = 4285953000. Its totient is φ = 3758934784.

The previous prime is 4020856331. The next prime is 4020856339. The reversal of 4020856337 is 7336580204.

It can be written as a sum of positive squares in 4 ways, for example, as 95082001 + 3925774336 = 9751^2 + 62656^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4020856337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4020856337.

It is not an unprimeable number, because it can be changed into a prime (4020856331) 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 7 ways as a sum of consecutive naturals, for example, 791162 + ... + 796227.

It is an arithmetic number, because the mean of its divisors is an integer number (535744125).

Almost surely, 2^4020856337 is an apocalyptic number.

It is an amenable number.

4020856337 is a deficient number, since it is larger than the sum of its proper divisors (265096663).

4020856337 is a wasteful number, since it uses less digits than its factorization.

4020856337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1587555.

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 4020856337 is about 63410.2226537646. Note that the first 3 decimals coincide. The cubic root of 4020856337 is about 1590.1552182896.

The spelling of 4020856337 in words is "four billion, twenty million, eight hundred fifty-six thousand, three hundred thirty-seven".