6435220489 has 4 divisors (see below), whose sum is σ = 6531268624. Its totient is φ = 6339172356.

The previous prime is 6435220483. The next prime is 6435220499. The reversal of 6435220489 is 9840225346.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6435220489 - 2³ = 6435220481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6435220481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48023967 + ... + 48024100.

It is an arithmetic number, because the mean of its divisors is an integer number (1632817156).

Almost surely, 2^6435220489 is an apocalyptic number.

It is an amenable number.

6435220489 is a deficient number, since it is larger than the sum of its proper divisors (96048135).

6435220489 is an equidigital number, since it uses as much as digits as its factorization.

6435220489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96048134.

The product of its (nonzero) digits is 414720, while the sum is 43.

The square root of 6435220489 is about 80219.8260344661. The cubic root of 6435220489 is about 1860.0351179441.

The spelling of 6435220489 in words is "six billion, four hundred thirty-five million, two hundred twenty thousand, four hundred eighty-nine".