84731422 has 4 divisors (see below), whose sum is σ = 127097136. Its totient is φ = 42365710.

The previous prime is 84731407. The next prime is 84731429. The reversal of 84731422 is 22413748.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84731429) 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 as a sum of consecutive naturals, namely, 21182854 + ... + 21182857.

It is an arithmetic number, because the mean of its divisors is an integer number (31774284).

Almost surely, 2^84731422 is an apocalyptic number.

84731422 is a deficient number, since it is larger than the sum of its proper divisors (42365714).

84731422 is a wasteful number, since it uses less digits than its factorization.

84731422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42365713.

The product of its digits is 10752, while the sum is 31.

The square root of 84731422 is about 9204.9672460036. The cubic root of 84731422 is about 439.2193838125.

The spelling of 84731422 in words is "eighty-four million, seven hundred thirty-one thousand, four hundred twenty-two".