4389464064 has 96 divisors (see below), whose sum is σ = 11901708000. Its totient is φ = 1438236672.

The previous prime is 4389464021. The next prime is 4389464077. The reversal of 4389464064 is 4604649834.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356442 + ... + 368550.

It is an arithmetic number, because the mean of its divisors is an integer number (123976125).

Almost surely, 2^4389464064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4389464064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5950854000).

4389464064 is an abundant number, since it is smaller than the sum of its proper divisors (7512243936).

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

4389464064 is a wasteful number, since it uses less digits than its factorization.

4389464064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12193 (or 12173 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 48.

The square root of 4389464064 is about 66253.0306023807. The cubic root of 4389464064 is about 1637.3335691153. Note that the first 3 decimals are identical.

The spelling of 4389464064 in words is "four billion, three hundred eighty-nine million, four hundred sixty-four thousand, sixty-four".