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, and also an emirpimes, since its reverse is a distinct semiprime: 73224874 = 2 ⋅36612437.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-47842237 is a prime.
It is a Duffinian number.
It is a congruent number.
It is a 2718-hyperperfect number.
Almost surely, 247842237 is an apocalyptic number.
It is an amenable number.
47842237 is a wasteful number, since it uses less digits than its factorization.
47842237 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 17602.
The square root of 47842237 is about 6916.8082957387. The cubic root of 47842237 is about 363.0255226712.
The spelling of 47842237 in words is "forty-seven million, eight hundred forty-two thousand, two hundred thirty-seven".