84490143 has 8 divisors (see below), whose sum is σ = 113328768. Its totient is φ = 55989144.

The previous prime is 84490139. The next prime is 84490157. The reversal of 84490143 is 34109448.

It is a happy number.

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

It is not a de Polignac number, because 84490143 - 2² = 84490139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84490123) 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, 83821 + ... + 84822.

It is an arithmetic number, because the mean of its divisors is an integer number (14166096).

Almost surely, 2^84490143 is an apocalyptic number.

84490143 is a deficient number, since it is larger than the sum of its proper divisors (28838625).

84490143 is a wasteful number, since it uses less digits than its factorization.

84490143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168813.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 84490143 is about 9191.8519896700. The cubic root of 84490143 is about 438.8020842219.

The spelling of 84490143 in words is "eighty-four million, four hundred ninety thousand, one hundred forty-three".