47805419 has 4 divisors (see below), whose sum is σ = 47827320. Its totient is φ = 47783520.

The previous prime is 47805413. The next prime is 47805469. The reversal of 47805419 is 91450874.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47805419 - 2⁴ = 47805403 is a prime.

It is a super-2 number, since 2×47805419² = 4570716171531122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47805413) 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, 7262 + ... + 12179.

It is an arithmetic number, because the mean of its divisors is an integer number (11956830).

Almost surely, 2^47805419 is an apocalyptic number.

47805419 is a deficient number, since it is larger than the sum of its proper divisors (21901).

47805419 is a wasteful number, since it uses less digits than its factorization.

47805419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21900.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 47805419 is about 6914.1462958199. The cubic root of 47805419 is about 362.9323741296.

The spelling of 47805419 in words is "forty-seven million, eight hundred five thousand, four hundred nineteen".