8556963493 has 16 divisors (see below), whose sum is σ = 9839491200. Its totient is φ = 7379596224.

The previous prime is 8556963479. The next prime is 8556963553. The reversal of 8556963493 is 3943696558.

It is not a de Polignac number, because 8556963493 - 2¹⁷ = 8556832421 is a prime.

It is a super-2 number, since 2×8556963493² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8556963433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 319918 + ... + 345631.

It is an arithmetic number, because the mean of its divisors is an integer number (614968200).

Almost surely, 2^8556963493 is an apocalyptic number.

It is an amenable number.

8556963493 is a deficient number, since it is larger than the sum of its proper divisors (1282527707).

8556963493 is a wasteful number, since it uses less digits than its factorization.

8556963493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665628.

The product of its digits is 20995200, while the sum is 58.

The square root of 8556963493 is about 92503.8566385208. The cubic root of 8556963493 is about 2045.3763327630.

The spelling of 8556963493 in words is "eight billion, five hundred fifty-six million, nine hundred sixty-three thousand, four hundred ninety-three".