9947387672 has 32 divisors (see below), whose sum is σ = 19336028400. Its totient is φ = 4791851904.

The previous prime is 9947387641. The next prime is 9947387693. The reversal of 9947387672 is 2767837499.

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, 62438 + ... + 154250.

Almost surely, 2^9947387672 is an apocalyptic number.

It is an amenable number.

9947387672 is a deficient number, since it is larger than the sum of its proper divisors (9388640728).

9947387672 is a wasteful number, since it uses less digits than its factorization.

9947387672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92315 (or 92311 counting only the distinct ones).

The product of its digits is 32006016, while the sum is 62.

The square root of 9947387672 is about 99736.5914396517. The cubic root of 9947387672 is about 2150.6497168901.

The spelling of 9947387672 in words is "nine billion, nine hundred forty-seven million, three hundred eighty-seven thousand, six hundred seventy-two".