47821823 has 8 divisors (see below), whose sum is σ = 54705792. Its totient is φ = 40950936.

The previous prime is 47821817. The next prime is 47821849. The reversal of 47821823 is 32812874.

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

It is a cyclic number.

It is not a de Polignac number, because 47821823 - 2⁸ = 47821567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47821883) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 6536 + ... + 11762.

It is an arithmetic number, because the mean of its divisors is an integer number (6838224).

Almost surely, 2^47821823 is an apocalyptic number.

47821823 is a deficient number, since it is larger than the sum of its proper divisors (6883969).

47821823 is a wasteful number, since it uses less digits than its factorization.

47821823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6541.

The product of its digits is 21504, while the sum is 35.

The square root of 47821823 is about 6915.3324576625. The cubic root of 47821823 is about 362.9738817100.

The spelling of 47821823 in words is "forty-seven million, eight hundred twenty-one thousand, eight hundred twenty-three".