8629778934 has 64 divisors (see below), whose sum is σ = 21964884480. Its totient is φ = 2460252960.

The previous prime is 8629778923. The next prime is 8629778939. The reversal of 8629778934 is 4398779268.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8629778939) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 149497 + ... + 199019.

It is an arithmetic number, because the mean of its divisors is an integer number (343201320).

Almost surely, 2^8629778934 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8629778934, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10982442240).

8629778934 is an abundant number, since it is smaller than the sum of its proper divisors (13335105546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8629778934 is a wasteful number, since it uses less digits than its factorization.

8629778934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50002 (or 49996 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 63.

The square root of 8629778934 is about 92896.6034578229. The cubic root of 8629778934 is about 2051.1616603835.

The spelling of 8629778934 in words is "eight billion, six hundred twenty-nine million, seven hundred seventy-eight thousand, nine hundred thirty-four".