6539489452 has 12 divisors (see below), whose sum is σ = 11452069440. Its totient is φ = 3267469616.

The previous prime is 6539489447. The next prime is 6539489479. The reversal of 6539489452 is 2549849356.

It is a junction number, because it is equal to n+sod(n) for n = 6539489393 and 6539489402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 562303 + ... + 573814.

It is an arithmetic number, because the mean of its divisors is an integer number (954339120).

Almost surely, 2^6539489452 is an apocalyptic number.

It is an amenable number.

6539489452 is a deficient number, since it is larger than the sum of its proper divisors (4912579988).

6539489452 is a wasteful number, since it uses less digits than its factorization.

6539489452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137560 (or 1137558 counting only the distinct ones).

The product of its digits is 9331200, while the sum is 55.

The square root of 6539489452 is about 80867.1098284092. The cubic root of 6539489452 is about 1870.0273049289.

It can be divided in two parts, 65394 and 89452, that added together give a triangular number (154846 = T₅₅₆).

The spelling of 6539489452 in words is "six billion, five hundred thirty-nine million, four hundred eighty-nine thousand, four hundred fifty-two".