47742844 has 6 divisors (see below), whose sum is σ = 83549984. Its totient is φ = 23871420.

The previous prime is 47742833. The next prime is 47742887. The reversal of 47742844 is 44824774.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 47742797 and 47742806.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5967852 + ... + 5967859.

Almost surely, 2^47742844 is an apocalyptic number.

It is an amenable number.

47742844 is a deficient number, since it is larger than the sum of its proper divisors (35807140).

47742844 is a wasteful number, since it uses less digits than its factorization.

47742844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11935715 (or 11935713 counting only the distinct ones).

The product of its digits is 200704, while the sum is 40.

The square root of 47742844 is about 6909.6196711541. The cubic root of 47742844 is about 362.7739512981.

The spelling of 47742844 in words is "forty-seven million, seven hundred forty-two thousand, eight hundred forty-four".