8748778479 has 64 divisors (see below), whose sum is σ = 14204436480. Its totient is φ = 4681797120.

The previous prime is 8748778477. The next prime is 8748778487. The reversal of 8748778479 is 9748778478.

It is not a de Polignac number, because 8748778479 - 2¹ = 8748778477 is a prime.

It is a super-2 number, since 2×8748778479² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8748778477) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9603034 + ... + 9603944.

It is an arithmetic number, because the mean of its divisors is an integer number (221944320).

Almost surely, 2^8748778479 is an apocalyptic number.

8748778479 is a deficient number, since it is larger than the sum of its proper divisors (5455658001).

8748778479 is a wasteful number, since it uses less digits than its factorization.

8748778479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340.

The product of its digits is 177020928, while the sum is 69.

The square root of 8748778479 is about 93534.9051370663. The cubic root of 8748778479 is about 2060.5467552219.

Subtracting 8748778479 from its reverse (9748778478), we obtain a palindrome (999999999).

The spelling of 8748778479 in words is "eight billion, seven hundred forty-eight million, seven hundred seventy-eight thousand, four hundred seventy-nine".