47284885 has 4 divisors (see below), whose sum is σ = 56741868. Its totient is φ = 37827904.

The previous prime is 47284883. The next prime is 47284891. The reversal of 47284885 is 58848274.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58848274 = 2 ⋅29424137.

It can be written as a sum of positive squares in 2 ways, for example, as 8259876 + 39025009 = 2874^2 + 6247^2 .

It is a cyclic number.

It is not a de Polignac number, because 47284885 - 2¹ = 47284883 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 (47284883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4728484 + ... + 4728493.

It is an arithmetic number, because the mean of its divisors is an integer number (14185467).

Almost surely, 2^47284885 is an apocalyptic number.

It is an amenable number.

47284885 is a deficient number, since it is larger than the sum of its proper divisors (9456983).

47284885 is an equidigital number, since it uses as much as digits as its factorization.

47284885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9456982.

The product of its digits is 573440, while the sum is 46.

The square root of 47284885 is about 6876.4005846082. The cubic root of 47284885 is about 361.6102889698.

The spelling of 47284885 in words is "forty-seven million, two hundred eighty-four thousand, eight hundred eighty-five".