4393481508 has 90 divisors (see below), whose sum is σ = 12034006894. Its totient is φ = 1351524096.

The previous prime is 4393481501. The next prime is 4393481569. The reversal of 4393481508 is 8051843934.

4393481508 is a `hidden beast` number, since 4 + 39 + 34 + 81 + 508 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 4062532644 + 330948864 = 63738^2 + 18192^2 .

It is a super-2 number, since 2×4393481508² = 38605359522275908128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4393481501) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1026060 + ... + 1030332.

Almost surely, 2^4393481508 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 4393481508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6017003447).

4393481508 is an abundant number, since it is smaller than the sum of its proper divisors (7640525386).

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

4393481508 is a wasteful number, since it uses less digits than its factorization.

4393481508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4335 (or 4291 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 4393481508 is about 66283.3426133595. The cubic root of 4393481508 is about 1637.8329383661.

The spelling of 4393481508 in words is "four billion, three hundred ninety-three million, four hundred eighty-one thousand, five hundred eight".