84143497 has 4 divisors (see below), whose sum is σ = 84378240. Its totient is φ = 83908756.

The previous prime is 84143467. The next prime is 84143503. The reversal of 84143497 is 79434148.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84143497 - 2¹⁵ = 84110729 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84143467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116833 + ... + 117550.

It is an arithmetic number, because the mean of its divisors is an integer number (21094560).

Almost surely, 2^84143497 is an apocalyptic number.

It is an amenable number.

84143497 is a deficient number, since it is larger than the sum of its proper divisors (234743).

84143497 is a wasteful number, since it uses less digits than its factorization.

84143497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234742.

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

The square root of 84143497 is about 9172.9764526025. The cubic root of 84143497 is about 438.2011561866.

It can be divided in two parts, 8414 and 3497, that added together give a palindrome (11911).

The spelling of 84143497 in words is "eighty-four million, one hundred forty-three thousand, four hundred ninety-seven".