47189217 has 16 divisors (see below), whose sum is σ = 66381120. Its totient is φ = 29736000.

The previous prime is 47189159. The next prime is 47189221. The reversal of 47189217 is 71298174.

It is not a de Polignac number, because 47189217 - 2⁷ = 47189089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47189117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39367 + ... + 40547.

It is an arithmetic number, because the mean of its divisors is an integer number (4148820).

Almost surely, 2^47189217 is an apocalyptic number.

It is an amenable number.

47189217 is a deficient number, since it is larger than the sum of its proper divisors (19191903).

47189217 is a wasteful number, since it uses less digits than its factorization.

47189217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1904.

The product of its digits is 28224, while the sum is 39.

The square root of 47189217 is about 6869.4408069362. The cubic root of 47189217 is about 361.3662512240.

The spelling of 47189217 in words is "forty-seven million, one hundred eighty-nine thousand, two hundred seventeen".