84489942 has 16 divisors (see below), whose sum is σ = 174431232. Its totient is φ = 27254760.

The previous prime is 84489917. The next prime is 84489953. The reversal of 84489942 is 24998448.

It is a junction number, because it is equal to n+sod(n) for n = 84489891 and 84489900.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 226938 + ... + 227309.

It is an arithmetic number, because the mean of its divisors is an integer number (10901952).

Almost surely, 2^84489942 is an apocalyptic number.

84489942 is an abundant number, since it is smaller than the sum of its proper divisors (89941290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84489942 is a wasteful number, since it uses less digits than its factorization.

84489942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454283.

The product of its digits is 663552, while the sum is 48.

The square root of 84489942 is about 9191.8410560671. The cubic root of 84489942 is about 438.8017362551.

It can be divided in two parts, 84 and 489942, that multiplied together give a triangular number (41155128 = T₉₀₇₂).

The spelling of 84489942 in words is "eighty-four million, four hundred eighty-nine thousand, nine hundred forty-two".