47447992 has 16 divisors (see below), whose sum is σ = 89389800. Its totient is φ = 23610720.

The previous prime is 47447987. The next prime is 47447999. The reversal of 47447992 is 29974474.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47447999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12367 + ... + 15742.

Almost surely, 2^47447992 is an apocalyptic number.

It is an amenable number.

47447992 is a deficient number, since it is larger than the sum of its proper divisors (41941808).

47447992 is a wasteful number, since it uses less digits than its factorization.

47447992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28326 (or 28322 counting only the distinct ones).

The product of its digits is 508032, while the sum is 46.

The square root of 47447992 is about 6888.2502858128. The cubic root of 47447992 is about 362.0255977341.

The spelling of 47447992 in words is "forty-seven million, four hundred forty-seven thousand, nine hundred ninety-two".