47218799 has 4 divisors (see below), whose sum is σ = 47264040. Its totient is φ = 47173560.

The previous prime is 47218789. The next prime is 47218817. The reversal of 47218799 is 99781274.

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 47218799 - 2⁸ = 47218543 is a prime.

It is a super-2 number, since 2×47218799² = 4459229958004802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47218709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21017 + ... + 23154.

It is an arithmetic number, because the mean of its divisors is an integer number (11816010).

Almost surely, 2^47218799 is an apocalyptic number.

47218799 is a deficient number, since it is larger than the sum of its proper divisors (45241).

47218799 is a wasteful number, since it uses less digits than its factorization.

47218799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45240.

The product of its digits is 254016, while the sum is 47.

The square root of 47218799 is about 6871.5936288462. The cubic root of 47218799 is about 361.4417466029.

The spelling of 47218799 in words is "forty-seven million, two hundred eighteen thousand, seven hundred ninety-nine".