4085306621 has 32 divisors (see below), whose sum is σ = 4765132800. Its totient is φ = 3465633600.

The previous prime is 4085306581. The next prime is 4085306627. The reversal of 4085306621 is 1266035804.

It is not a de Polignac number, because 4085306621 - 2⁶ = 4085306557 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 (4085306627) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2667626 + ... + 2669156.

It is an arithmetic number, because the mean of its divisors is an integer number (148910400).

Almost surely, 2^4085306621 is an apocalyptic number.

It is an amenable number.

4085306621 is a deficient number, since it is larger than the sum of its proper divisors (679826179).

4085306621 is a wasteful number, since it uses less digits than its factorization.

4085306621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1817.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 4085306621 is about 63916.4033797272. The cubic root of 4085306621 is about 1598.6064195035.

The spelling of 4085306621 in words is "four billion, eighty-five million, three hundred six thousand, six hundred twenty-one".