84471905 has 8 divisors (see below), whose sum is σ = 115847232. Its totient is φ = 57923568.

The previous prime is 84471901. The next prime is 84471911. The reversal of 84471905 is 50917448.

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

It is a cyclic number.

It is not a de Polignac number, because 84471905 - 2² = 84471901 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (84471901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1206707 + ... + 1206776.

It is an arithmetic number, because the mean of its divisors is an integer number (14480904).

Almost surely, 2^84471905 is an apocalyptic number.

It is an amenable number.

84471905 is a deficient number, since it is larger than the sum of its proper divisors (31375327).

84471905 is a wasteful number, since it uses less digits than its factorization.

84471905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2413495.

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

The square root of 84471905 is about 9190.8598618410. The cubic root of 84471905 is about 438.7705087504.

The spelling of 84471905 in words is "eighty-four million, four hundred seventy-one thousand, nine hundred five".