47780823 has 8 divisors (see below), whose sum is σ = 63943936. Its totient is φ = 31735800.

The previous prime is 47780819. The next prime is 47780881. The reversal of 47780823 is 32808774.

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

It is not a de Polignac number, because 47780823 - 2² = 47780819 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47780813) 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, 28573 + ... + 30198.

It is an arithmetic number, because the mean of its divisors is an integer number (7992992).

Almost surely, 2^47780823 is an apocalyptic number.

47780823 is a deficient number, since it is larger than the sum of its proper divisors (16163113).

47780823 is a wasteful number, since it uses less digits than its factorization.

47780823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59045.

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 47780823 is about 6912.3673947498. The cubic root of 47780823 is about 362.8701202663.

The spelling of 47780823 in words is "forty-seven million, seven hundred eighty thousand, eight hundred twenty-three".