4004400078 has 80 divisors (see below), whose sum is σ = 10266093024. Its totient is φ = 1142838720.

The previous prime is 4004400077. The next prime is 4004400079. The reversal of 4004400078 is 8700044004.

It is an interprime number because it is at equal distance from previous prime (4004400077) and next prime (4004400079).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4004400077) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1564776 + ... + 1567332.

Almost surely, 2^4004400078 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4004400078, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5133046512).

4004400078 is an abundant number, since it is smaller than the sum of its proper divisors (6261692946).

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

4004400078 is a wasteful number, since it uses less digits than its factorization.

4004400078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3959 (or 3950 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 4004400078 is about 63280.3293133024. The cubic root of 4004400078 is about 1587.9828960442.

The spelling of 4004400078 in words is "four billion, four million, four hundred thousand, seventy-eight".