47491243 has 4 divisors (see below), whose sum is σ = 48649608. Its totient is φ = 46332880.

The previous prime is 47491237. The next prime is 47491253. The reversal of 47491243 is 34219474.

It is a happy number.

47491243 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 a cyclic number.

It is not a de Polignac number, because 47491243 - 2⁵ = 47491211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47491199 and 47491208.

It is not an unprimeable number, because it can be changed into a prime (47491253) 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, 579121 + ... + 579202.

It is an arithmetic number, because the mean of its divisors is an integer number (12162402).

Almost surely, 2^47491243 is an apocalyptic number.

47491243 is a deficient number, since it is larger than the sum of its proper divisors (1158365).

47491243 is a wasteful number, since it uses less digits than its factorization.

47491243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158364.

The product of its digits is 24192, while the sum is 34.

The square root of 47491243 is about 6891.3890472096. The cubic root of 47491243 is about 362.1355652531.

The spelling of 47491243 in words is "forty-seven million, four hundred ninety-one thousand, two hundred forty-three".