47917449 has 12 divisors (see below), whose sum is σ = 72857200. Its totient is φ = 30263544.

The previous prime is 47917447. The next prime is 47917501. The reversal of 47917449 is 94471974.

47917449 is a `hidden beast` number, since 479 + 174 + 4 + 9 = 666.

47917449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 47917449 - 2¹ = 47917447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47917447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139939 + ... + 140280.

Almost surely, 2^47917449 is an apocalyptic number.

It is an amenable number.

47917449 is a deficient number, since it is larger than the sum of its proper divisors (24939751).

47917449 is a wasteful number, since it uses less digits than its factorization.

47917449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280244 (or 280241 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 47917449 is about 6922.2430613205. The cubic root of 47917449 is about 363.2156585694.

The spelling of 47917449 in words is "forty-seven million, nine hundred seventeen thousand, four hundred forty-nine".