3889220445 has 24 divisors (see below), whose sum is σ = 7354163232. Its totient is φ = 1885682400.

The previous prime is 3889220429. The next prime is 3889220453. The reversal of 3889220445 is 5440229883.

3889220445 is a `hidden beast` number, since 388 + 9 + 220 + 4 + 45 = 666.

It is not a de Polignac number, because 3889220445 - 2⁴ = 3889220429 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 3889220445.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3928011 + ... + 3929000.

It is an arithmetic number, because the mean of its divisors is an integer number (306423468).

Almost surely, 2^3889220445 is an apocalyptic number.

It is an amenable number.

3889220445 is a deficient number, since it is larger than the sum of its proper divisors (3464942787).

3889220445 is a wasteful number, since it uses less digits than its factorization.

3889220445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7857033 (or 7857030 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 3889220445 is about 62363.6147525141. The cubic root of 3889220445 is about 1572.6093497003.

The spelling of 3889220445 in words is "three billion, eight hundred eighty-nine million, two hundred twenty thousand, four hundred forty-five".