47443819 has 4 divisors (see below), whose sum is σ = 47527480. Its totient is φ = 47360160.

The previous prime is 47443813. The next prime is 47443829. The reversal of 47443819 is 91834474.

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 47443819 - 2³ = 47443811 is a prime.

It is a super-2 number, since 2×47443819² = 4501831922609522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47443811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40974 + ... + 42115.

It is an arithmetic number, because the mean of its divisors is an integer number (11881870).

Almost surely, 2^47443819 is an apocalyptic number.

47443819 is a deficient number, since it is larger than the sum of its proper divisors (83661).

47443819 is an equidigital number, since it uses as much as digits as its factorization.

47443819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83660.

The product of its digits is 96768, while the sum is 40.

The square root of 47443819 is about 6887.9473720405. The cubic root of 47443819 is about 362.0149841686.

The spelling of 47443819 in words is "forty-seven million, four hundred forty-three thousand, eight hundred nineteen".