4388778834 has 128 divisors (see below), whose sum is σ = 10029000960. Its totient is φ = 1269043200.

The previous prime is 4388778781. The next prime is 4388778839.

It is a happy number.

4388778834 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×4388778834² = 38522759307532799112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4388778839) 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, 32034814 + ... + 32034950.

It is an arithmetic number, because the mean of its divisors is an integer number (78351570).

Almost surely, 2^4388778834 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4388778834, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5014500480).

4388778834 is an abundant number, since it is smaller than the sum of its proper divisors (5640222126).

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

4388778834 is a wasteful number, since it uses less digits than its factorization.

4388778834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396.

The product of its digits is 28901376, while the sum is 60.

The square root of 4388778834 is about 66247.8590899359. The cubic root of 4388778834 is about 1637.2483644486.

The spelling of 4388778834 in words is "four billion, three hundred eighty-eight million, seven hundred seventy-eight thousand, eight hundred thirty-four".