84455642 has 8 divisors (see below), whose sum is σ = 127340436. Its totient is φ = 42008832.

The previous prime is 84455641. The next prime is 84455647. The reversal of 84455642 is 24655448.

It can be written as a sum of positive squares in 2 ways, for example, as 84254041 + 201601 = 9179^2 + 449^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 84455596 and 84455605.

It is not an unprimeable number, because it can be changed into a prime (84455641) 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 3 ways as a sum of consecutive naturals, for example, 109013 + ... + 109784.

Almost surely, 2^84455642 is an apocalyptic number.

84455642 is a deficient number, since it is larger than the sum of its proper divisors (42884794).

84455642 is a wasteful number, since it uses less digits than its factorization.

84455642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218992.

The product of its digits is 153600, while the sum is 38.

The square root of 84455642 is about 9189.9750815767. The cubic root of 84455642 is about 438.7423487653.

The spelling of 84455642 in words is "eighty-four million, four hundred fifty-five thousand, six hundred forty-two".