8455663993 has 8 divisors (see below), whose sum is σ = 10172227520. Its totient is φ = 6866253360.

The previous prime is 8455663939. The next prime is 8455663999. The reversal of 8455663993 is 3993665548.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8455663993 - 2¹³ = 8455655801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8455663999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31788078 + ... + 31788343.

It is an arithmetic number, because the mean of its divisors is an integer number (1271528440).

Almost surely, 2^8455663993 is an apocalyptic number.

It is an amenable number.

8455663993 is a deficient number, since it is larger than the sum of its proper divisors (1716563527).

8455663993 is a wasteful number, since it uses less digits than its factorization.

8455663993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63576447.

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

The square root of 8455663993 is about 91954.6844538113. The cubic root of 8455663993 is about 2037.2730442778.

The spelling of 8455663993 in words is "eight billion, four hundred fifty-five million, six hundred sixty-three thousand, nine hundred ninety-three".