84650040 has 96 divisors (see below), whose sum is σ = 278525520. Its totient is φ = 22293504.

The previous prime is 84650003. The next prime is 84650047. The reversal of 84650040 is 4005648.

84650040 is a `hidden beast` number, since 8 + 4 + 650 + 0 + 4 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 84649986 and 84650013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84650047) 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 23 ways as a sum of consecutive naturals, for example, 28464 + ... + 31296.

Almost surely, 2^84650040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84650040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139262760).

84650040 is an abundant number, since it is smaller than the sum of its proper divisors (193875480).

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

84650040 is a wasteful number, since it uses less digits than its factorization.

84650040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2933 (or 2926 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 84650040 is about 9200.5456359936. The cubic root of 84650040 is about 439.0787197353.

Adding to 84650040 its reverse (4005648), we get a palindrome (88655688).

The spelling of 84650040 in words is "eighty-four million, six hundred fifty thousand, forty".