84990246 has 16 divisors (see below), whose sum is σ = 185433408. Its totient is φ = 25754600.

The previous prime is 84990239. The next prime is 84990247. The reversal of 84990246 is 64209948.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 84990198 and 84990207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84990247) 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 7 ways as a sum of consecutive naturals, for example, 643800 + ... + 643931.

It is an arithmetic number, because the mean of its divisors is an integer number (11589588).

Almost surely, 2^84990246 is an apocalyptic number.

84990246 is an abundant number, since it is smaller than the sum of its proper divisors (100443162).

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

84990246 is a wasteful number, since it uses less digits than its factorization.

84990246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287747.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 84990246 is about 9219.0154571950. The cubic root of 84990246 is about 439.6661482679. Note that the first 3 decimals are identical.

It can be divided in two parts, 849902 and 46, that added together give a palindrome (849948).

The spelling of 84990246 in words is "eighty-four million, nine hundred ninety thousand, two hundred forty-six".