47424217 has 4 divisors (see below), whose sum is σ = 47521296. Its totient is φ = 47327140.

The previous prime is 47424199. The next prime is 47424233. The reversal of 47424217 is 71242474.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47424217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47424277) 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, 47803 + ... + 48784.

It is an arithmetic number, because the mean of its divisors is an integer number (11880324).

Almost surely, 2^47424217 is an apocalyptic number.

It is an amenable number.

47424217 is a deficient number, since it is larger than the sum of its proper divisors (97079).

47424217 is an equidigital number, since it uses as much as digits as its factorization.

47424217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97078.

The product of its digits is 12544, while the sum is 31.

The square root of 47424217 is about 6886.5243047564. The cubic root of 47424217 is about 361.9651203128.

The spelling of 47424217 in words is "forty-seven million, four hundred twenty-four thousand, two hundred seventeen".