47803509 has 36 divisors (see below), whose sum is σ = 76308804. Its totient is φ = 28813824.

The previous prime is 47803501. The next prime is 47803523. The reversal of 47803509 is 90530874.

It can be written as a sum of positive squares in 6 ways, for example, as 2241009 + 45562500 = 1497^2 + 6750^2 .

It is not a de Polignac number, because 47803509 - 2³ = 47803501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47803501) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 80317 + ... + 80909.

It is an arithmetic number, because the mean of its divisors is an integer number (2119689).

Almost surely, 2^47803509 is an apocalyptic number.

It is an amenable number.

47803509 is a deficient number, since it is larger than the sum of its proper divisors (28505295).

47803509 is a wasteful number, since it uses less digits than its factorization.

47803509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678 (or 662 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 47803509 is about 6914.0081718205. The cubic root of 47803509 is about 362.9275405766.

The spelling of 47803509 in words is "forty-seven million, eight hundred three thousand, five hundred nine".