47813817 has 8 divisors (see below), whose sum is σ = 63870496. Its totient is φ = 31816512.

The previous prime is 47813789. The next prime is 47813819. The reversal of 47813817 is 71831874.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 47813817 - 2¹⁴ = 47797433 is a prime.

It is a super-2 number, since 2×47813817² = 4572322192218978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47813819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12928 + ... + 16209.

It is an arithmetic number, because the mean of its divisors is an integer number (7983812).

Almost surely, 2^47813817 is an apocalyptic number.

It is an amenable number.

47813817 is a deficient number, since it is larger than the sum of its proper divisors (16056679).

47813817 is a wasteful number, since it uses less digits than its factorization.

47813817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29687.

The product of its digits is 37632, while the sum is 39.

The square root of 47813817 is about 6914.7535747849. The cubic root of 47813817 is about 362.9536250511.

The spelling of 47813817 in words is "forty-seven million, eight hundred thirteen thousand, eight hundred seventeen".