8455489646 has 16 divisors (see below), whose sum is σ = 12986475984. Its totient is φ = 4127781504.

The previous prime is 8455489633. The next prime is 8455489657. The reversal of 8455489646 is 6469845548.

It is a happy number.

It is a super-2 number, since 2×8455489646² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264065 + ... + 294348.

It is an arithmetic number, because the mean of its divisors is an integer number (811654749).

Almost surely, 2^8455489646 is an apocalyptic number.

8455489646 is a deficient number, since it is larger than the sum of its proper divisors (4530986338).

8455489646 is a wasteful number, since it uses less digits than its factorization.

8455489646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558595.

The product of its digits is 33177600, while the sum is 59.

The square root of 8455489646 is about 91953.7364439314. The cubic root of 8455489646 is about 2037.2590420309.

The spelling of 8455489646 in words is "eight billion, four hundred fifty-five million, four hundred eighty-nine thousand, six hundred forty-six".