47085819 has 24 divisors (see below), whose sum is σ = 72649920. Its totient is φ = 27030960.

The previous prime is 47085811. The next prime is 47085827. The reversal of 47085819 is 91858074.

It is an interprime number because it is at equal distance from previous prime (47085811) and next prime (47085827).

It is not a de Polignac number, because 47085819 - 2³ = 47085811 is a prime.

It is a super-2 number, since 2×47085819² = 4434148701801522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (47085811) 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 23 ways as a sum of consecutive naturals, for example, 3484 + ... + 10310.

It is an arithmetic number, because the mean of its divisors is an integer number (3027080).

Almost surely, 2^47085819 is an apocalyptic number.

47085819 is a deficient number, since it is larger than the sum of its proper divisors (25564101).

47085819 is a wasteful number, since it uses less digits than its factorization.

47085819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6871 (or 6860 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 47085819 is about 6861.9107397284. The cubic root of 47085819 is about 361.1021239964.

The spelling of 47085819 in words is "forty-seven million, eighty-five thousand, eight hundred nineteen".