3556449789 has 16 divisors (see below), whose sum is σ = 4778085312. Its totient is φ = 2352958848.

The previous prime is 3556449781. The next prime is 3556449803. The reversal of 3556449789 is 9879446553.

It is not a de Polignac number, because 3556449789 - 2³ = 3556449781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3556449781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206307 + ... + 222879.

It is an arithmetic number, because the mean of its divisors is an integer number (298630332).

Almost surely, 2^3556449789 is an apocalyptic number.

It is an amenable number.

3556449789 is a deficient number, since it is larger than the sum of its proper divisors (1221635523).

3556449789 is a wasteful number, since it uses less digits than its factorization.

3556449789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17116.

The product of its digits is 32659200, while the sum is 60.

The square root of 3556449789 is about 59635.9773039731. The cubic root of 3556449789 is about 1526.4136012322.

The spelling of 3556449789 in words is "three billion, five hundred fifty-six million, four hundred forty-nine thousand, seven hundred eighty-nine".