47447798 has 4 divisors (see below), whose sum is σ = 71171700. Its totient is φ = 23723898.

The previous prime is 47447779. The next prime is 47447819. The reversal of 47447798 is 89774474.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11861948 + ... + 11861951.

It is an arithmetic number, because the mean of its divisors is an integer number (17792925).

Almost surely, 2^47447798 is an apocalyptic number.

47447798 is a deficient number, since it is larger than the sum of its proper divisors (23723902).

47447798 is a wasteful number, since it uses less digits than its factorization.

47447798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23723901.

The product of its digits is 1580544, while the sum is 50.

The square root of 47447798 is about 6888.2362038478. The cubic root of 47447798 is about 362.0251043302.

The spelling of 47447798 in words is "forty-seven million, four hundred forty-seven thousand, seven hundred ninety-eight".