47219247 has 16 divisors (see below), whose sum is σ = 70915680. Its totient is φ = 31046976.

The previous prime is 47219243. The next prime is 47219257. The reversal of 47219247 is 74291274.

It is not a de Polignac number, because 47219247 - 2² = 47219243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47219243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10008 + ... + 13949.

It is an arithmetic number, because the mean of its divisors is an integer number (4432230).

Almost surely, 2^47219247 is an apocalyptic number.

47219247 is a deficient number, since it is larger than the sum of its proper divisors (23696433).

47219247 is a wasteful number, since it uses less digits than its factorization.

47219247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24039 (or 24033 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 47219247 is about 6871.6262267385. The cubic root of 47219247 is about 361.4428896885.

The spelling of 47219247 in words is "forty-seven million, two hundred nineteen thousand, two hundred forty-seven".