47942783 has 4 divisors (see below), whose sum is σ = 54791760. Its totient is φ = 41093808.

The previous prime is 47942777. The next prime is 47942801. The reversal of 47942783 is 38724974.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38724974 = 2 ⋅19362487.

It is not a de Polignac number, because 47942783 - 2¹⁴ = 47926399 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 (47942743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3424478 + ... + 3424491.

It is an arithmetic number, because the mean of its divisors is an integer number (13697940).

Almost surely, 2^47942783 is an apocalyptic number.

47942783 is a deficient number, since it is larger than the sum of its proper divisors (6848977).

47942783 is an equidigital number, since it uses as much as digits as its factorization.

47942783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6848976.

The product of its digits is 338688, while the sum is 44.

The square root of 47942783 is about 6924.0727177002. The cubic root of 47942783 is about 363.2796581110.

The spelling of 47942783 in words is "forty-seven million, nine hundred forty-two thousand, seven hundred eighty-three".