84990140 has 24 divisors (see below), whose sum is σ = 188978832. Its totient is φ = 31996160.

The previous prime is 84990133. The next prime is 84990163. The reversal of 84990140 is 4109948.

It is a self number, because there is not a number n which added to its sum of digits gives 84990140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124646 + ... + 125325.

It is an arithmetic number, because the mean of its divisors is an integer number (7874118).

Almost surely, 2^84990140 is an apocalyptic number.

It is an amenable number.

84990140 is an abundant number, since it is smaller than the sum of its proper divisors (103988692).

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

84990140 is a wasteful number, since it uses less digits than its factorization.

84990140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249997 (or 249995 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 84990140 is about 9219.0097082062. The cubic root of 84990140 is about 439.6659654837.

The spelling of 84990140 in words is "eighty-four million, nine hundred ninety thousand, one hundred forty".