47783889 has 12 divisors (see below), whose sum is σ = 73081476. Its totient is φ = 29981952.

The previous prime is 47783887. The next prime is 47783893. The reversal of 47783889 is 98838774.

It can be written as a sum of positive squares in 2 ways, for example, as 34715664 + 13068225 = 5892^2 + 3615^2 .

It is not a de Polignac number, because 47783889 - 2¹ = 47783887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47783887) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156004 + ... + 156309.

It is an arithmetic number, because the mean of its divisors is an integer number (6090123).

Almost surely, 2^47783889 is an apocalyptic number.

It is an amenable number.

47783889 is a deficient number, since it is larger than the sum of its proper divisors (25297587).

47783889 is a wasteful number, since it uses less digits than its factorization.

47783889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312336 (or 312333 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The square root of 47783889 is about 6912.5891675985. The cubic root of 47783889 is about 362.8778816507.

The spelling of 47783889 in words is "forty-seven million, seven hundred eighty-three thousand, eight hundred eighty-nine".