47477247 has 4 divisors (see below), whose sum is σ = 63303000. Its totient is φ = 31651496.

The previous prime is 47477237. The next prime is 47477249. The reversal of 47477247 is 74277474.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47477247 - 2²⁰ = 46428671 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47477199 and 47477208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47477249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7912872 + ... + 7912877.

It is an arithmetic number, because the mean of its divisors is an integer number (15825750).

Almost surely, 2^47477247 is an apocalyptic number.

47477247 is a deficient number, since it is larger than the sum of its proper divisors (15825753).

47477247 is a wasteful number, since it uses less digits than its factorization.

47477247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15825752.

The product of its digits is 307328, while the sum is 42.

The square root of 47477247 is about 6890.3735022131. The cubic root of 47477247 is about 362.0999871336.

The spelling of 47477247 in words is "forty-seven million, four hundred seventy-seven thousand, two hundred forty-seven".