47820783 has 4 divisors (see below), whose sum is σ = 63761048. Its totient is φ = 31880520.

The previous prime is 47820757. The next prime is 47820791. The reversal of 47820783 is 38702874.

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

It is not a de Polignac number, because 47820783 - 2⁸ = 47820527 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 (47820733) 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 3 ways as a sum of consecutive naturals, for example, 7970128 + ... + 7970133.

It is an arithmetic number, because the mean of its divisors is an integer number (15940262).

Almost surely, 2^47820783 is an apocalyptic number.

47820783 is a deficient number, since it is larger than the sum of its proper divisors (15940265).

47820783 is a wasteful number, since it uses less digits than its factorization.

47820783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15940264.

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

The square root of 47820783 is about 6915.2572620258. The cubic root of 47820783 is about 362.9712504457.

The spelling of 47820783 in words is "forty-seven million, eight hundred twenty thousand, seven hundred eighty-three".