4539989500 has 24 divisors (see below), whose sum is σ = 9915338160. Its totient is φ = 1815995600.

The previous prime is 4539989497. The next prime is 4539989539. The reversal of 4539989500 is 59899354.

It is a super-2 number, since 2×4539989500² = 41223009320220500000, which contains 22 as substring.

It is a congruent number.

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, 4539490 + ... + 4540489.

It is an arithmetic number, because the mean of its divisors is an integer number (413139090).

Almost surely, 2^4539989500 is an apocalyptic number.

It is an amenable number.

4539989500 is an abundant number, since it is smaller than the sum of its proper divisors (5375348660).

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

4539989500 is a wasteful number, since it uses less digits than its factorization.

4539989500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9079998 (or 9079986 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 52.

The square root of 4539989500 is about 67379.4441947988. Note that the first 3 decimals coincide. The cubic root of 4539989500 is about 1655.8396690871.

The spelling of 4539989500 in words is "four billion, five hundred thirty-nine million, nine hundred eighty-nine thousand, five hundred".