84499440 has 40 divisors (see below), whose sum is σ = 261949008. Its totient is φ = 22533120.

The previous prime is 84499439. The next prime is 84499463. The reversal of 84499440 is 4499448.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 84499392 and 84499401.

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, 175801 + ... + 176280.

Almost surely, 2^84499440 is an apocalyptic number.

84499440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

84499440 is an abundant number, since it is smaller than the sum of its proper divisors (177449568).

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

84499440 is a wasteful number, since it uses less digits than its factorization.

84499440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352097 (or 352091 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 84499440 is about 9192.3576953902. The cubic root of 84499440 is about 438.8181783808.

The spelling of 84499440 in words is "eighty-four million, four hundred ninety-nine thousand, four hundred forty".