47820893 has 4 divisors (see below), whose sum is σ = 48723228. Its totient is φ = 46918560.

The previous prime is 47820869. The next prime is 47820901. The reversal of 47820893 is 39802874.

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

It can be written as a sum of positive squares in 2 ways, for example, as 36517849 + 11303044 = 6043^2 + 3362^2 .

It is a cyclic number.

It is not a de Polignac number, because 47820893 - 2¹⁴ = 47804509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47820893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47820803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 451088 + ... + 451193.

It is an arithmetic number, because the mean of its divisors is an integer number (12180807).

Almost surely, 2^47820893 is an apocalyptic number.

It is an amenable number.

47820893 is a deficient number, since it is larger than the sum of its proper divisors (902335).

47820893 is an equidigital number, since it uses as much as digits as its factorization.

47820893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902334.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 47820893 is about 6915.2652154491. The cubic root of 47820893 is about 362.9715287543.

The spelling of 47820893 in words is "forty-seven million, eight hundred twenty thousand, eight hundred ninety-three".