47504391 has 8 divisors (see below), whose sum is σ = 69097344. Its totient is φ = 28790520.

The previous prime is 47504333. The next prime is 47504419. The reversal of 47504391 is 19340574.

47504391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 47504391 - 2¹⁰ = 47503367 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 1439527 = 47504391 / (4 + 7 + 5 + 0 + 4 + 3 + 9 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47504311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 719731 + ... + 719796.

It is an arithmetic number, because the mean of its divisors is an integer number (8637168).

Almost surely, 2^47504391 is an apocalyptic number.

47504391 is a deficient number, since it is larger than the sum of its proper divisors (21592953).

47504391 is a wasteful number, since it uses less digits than its factorization.

47504391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1439541.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 47504391 is about 6892.3429253049. The cubic root of 47504391 is about 362.1689813721.

It can be divided in two parts, 47504 and 391, that added together give a triangular number (47895 = T₃₀₉).

The spelling of 47504391 in words is "forty-seven million, five hundred four thousand, three hundred ninety-one".