4469189905 has 16 divisors (see below), whose sum is σ = 5425338384. Its totient is φ = 3533932800.

The previous prime is 4469189831. The next prime is 4469189939. The reversal of 4469189905 is 5099819644.

It is a Cunningham number, because it is equal to 66852²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 89794576 + 4379395329 = 9476^2 + 66177^2 .

It is not a de Polignac number, because 4469189905 - 2¹³ = 4469181713 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 302347 + ... + 316783.

It is an arithmetic number, because the mean of its divisors is an integer number (339083649).

Almost surely, 2^4469189905 is an apocalyptic number.

It is an amenable number.

4469189905 is a deficient number, since it is larger than the sum of its proper divisors (956148479).

4469189905 is a wasteful number, since it uses less digits than its factorization.

4469189905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15156.

The product of its (nonzero) digits is 2799360, while the sum is 55.

The square root of 4469189905 is about 66852.0000074792. Note that the first 5 decimals coincide. The cubic root of 4469189905 is about 1647.1871149386.

The spelling of 4469189905 in words is "four billion, four hundred sixty-nine million, one hundred eighty-nine thousand, nine hundred five".