3556223989 has 4 divisors (see below), whose sum is σ = 3565092780. Its totient is φ = 3547355200.

The previous prime is 3556223963. The next prime is 3556224019. The reversal of 3556223989 is 9893226553.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3417337764 + 138886225 = 58458^2 + 11785^2 .

It is a cyclic number.

It is not a de Polignac number, because 3556223989 - 2⁹ = 3556223477 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 (3556923989) 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 3 ways as a sum of consecutive naturals, for example, 4433794 + ... + 4434595.

It is an arithmetic number, because the mean of its divisors is an integer number (891273195).

Almost surely, 2^3556223989 is an apocalyptic number.

It is an amenable number.

3556223989 is a deficient number, since it is larger than the sum of its proper divisors (8868791).

3556223989 is an equidigital number, since it uses as much as digits as its factorization.

3556223989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8868790.

The product of its digits is 3499200, while the sum is 52.

The square root of 3556223989 is about 59634.0841214150. The cubic root of 3556223989 is about 1526.3812964052.

The spelling of 3556223989 in words is "three billion, five hundred fifty-six million, two hundred twenty-three thousand, nine hundred eighty-nine".