84399471 has 12 divisors (see below), whose sum is σ = 131288248. Its totient is φ = 51938064.

The previous prime is 84399467. The next prime is 84399493. The reversal of 84399471 is 17499348.

It is not a de Polignac number, because 84399471 - 2² = 84399467 is a prime.

It is a super-3 number, since 3×84399471³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84399671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 360565 + ... + 360798.

Almost surely, 2^84399471 is an apocalyptic number.

84399471 is a deficient number, since it is larger than the sum of its proper divisors (46888777).

84399471 is a wasteful number, since it uses less digits than its factorization.

84399471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721382 (or 721379 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 84399471 is about 9186.9184713918. The cubic root of 84399471 is about 438.6450587892.

The spelling of 84399471 in words is "eighty-four million, three hundred ninety-nine thousand, four hundred seventy-one".