47240247 has 4 divisors (see below), whose sum is σ = 62987000. Its totient is φ = 31493496.

The previous prime is 47240243. The next prime is 47240257. The reversal of 47240247 is 74204274.

47240247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 47240247 - 2² = 47240243 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47240243) 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 3 ways as a sum of consecutive naturals, for example, 7873372 + ... + 7873377.

It is an arithmetic number, because the mean of its divisors is an integer number (15746750).

Almost surely, 2^47240247 is an apocalyptic number.

47240247 is a deficient number, since it is larger than the sum of its proper divisors (15746753).

47240247 is a wasteful number, since it uses less digits than its factorization.

47240247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15746752.

The product of its (nonzero) digits is 12544, while the sum is 30.

The square root of 47240247 is about 6873.1540794602. The cubic root of 47240247 is about 361.4964637162.

The spelling of 47240247 in words is "forty-seven million, two hundred forty thousand, two hundred forty-seven".