84431534 has 16 divisors (see below), whose sum is σ = 138544560. Its totient is φ = 38271360.

The previous prime is 84431533. The next prime is 84431561. The reversal of 84431534 is 43513448.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 84431534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84431531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3062 + ... + 13350.

It is an arithmetic number, because the mean of its divisors is an integer number (8659035).

Almost surely, 2^84431534 is an apocalyptic number.

84431534 is a deficient number, since it is larger than the sum of its proper divisors (54113026).

84431534 is a wasteful number, since it uses less digits than its factorization.

84431534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10675.

The product of its digits is 23040, while the sum is 32.

The square root of 84431534 is about 9188.6633413136. The cubic root of 84431534 is about 438.7005982207.

The spelling of 84431534 in words is "eighty-four million, four hundred thirty-one thousand, five hundred thirty-four".