9639489456 has 80 divisors (see below), whose sum is σ = 27682380000. Its totient is φ = 3211598592.

The previous prime is 9639489383. The next prime is 9639489479. The reversal of 9639489456 is 6549849369.

9639489456 is a `hidden beast` number, since 96 + 3 + 94 + 8 + 9 + 456 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 9639489393 and 9639489402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1183510 + ... + 1191626.

It is an arithmetic number, because the mean of its divisors is an integer number (346029750).

Almost surely, 2^9639489456 is an apocalyptic number.

It is an amenable number.

9639489456 is an abundant number, since it is smaller than the sum of its proper divisors (18042890544).

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

9639489456 is a wasteful number, since it uses less digits than its factorization.

9639489456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10883 (or 10871 counting only the distinct ones).

The product of its digits is 50388480, while the sum is 63.

The square root of 9639489456 is about 98180.9016866315. The cubic root of 9639489456 is about 2128.2273050859.

The spelling of 9639489456 in words is "nine billion, six hundred thirty-nine million, four hundred eighty-nine thousand, four hundred fifty-six".