4055870721 has 32 divisors (see below), whose sum is σ = 6232729600. Its totient is φ = 2298067200.

The previous prime is 4055870713. The next prime is 4055870759. The reversal of 4055870721 is 1270785504.

It is not a de Polignac number, because 4055870721 - 2³ = 4055870713 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 4055870721.

It is not an unprimeable number, because it can be changed into a prime (4055870821) 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, 2723145 + ... + 2724633.

It is an arithmetic number, because the mean of its divisors is an integer number (194772800).

Almost surely, 2^4055870721 is an apocalyptic number.

It is an amenable number.

4055870721 is a deficient number, since it is larger than the sum of its proper divisors (2176858879).

4055870721 is a wasteful number, since it uses less digits than its factorization.

4055870721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2509.

The product of its (nonzero) digits is 78400, while the sum is 39.

The square root of 4055870721 is about 63685.7183440683. The cubic root of 4055870721 is about 1594.7576759970.

The spelling of 4055870721 in words is "four billion, fifty-five million, eight hundred seventy thousand, seven hundred twenty-one".