4394385072 has 270 divisors, whose sum is σ = 15727876164. Its totient is φ = 1141176960.

The previous prime is 4394385041. The next prime is 4394385089. The reversal of 4394385072 is 2705834934.

It is a super-2 number, since 2×4394385072² = 38621240322032890368, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 851203 + ... + 856349.

Almost surely, 2^4394385072 is an apocalyptic number.

4394385072 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4394385072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7863938082).

4394385072 is an abundant number, since it is smaller than the sum of its proper divisors (11333491092).

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

4394385072 is a wasteful number, since it uses less digits than its factorization.

4394385072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5197 (or 5170 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The square root of 4394385072 is about 66290.1581835494. The cubic root of 4394385072 is about 1637.9452096510.

The spelling of 4394385072 in words is "four billion, three hundred ninety-four million, three hundred eighty-five thousand, seventy-two".