84999140 has 12 divisors (see below), whose sum is σ = 178498236. Its totient is φ = 33999648.

The previous prime is 84999139. The next prime is 84999163. The reversal of 84999140 is 4199948.

It can be written as a sum of positive squares in 2 ways, for example, as 41886784 + 43112356 = 6472^2 + 6566^2 .

It is a junction number, because it is equal to n+sod(n) for n = 84999091 and 84999100.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2124959 + ... + 2124998.

It is an arithmetic number, because the mean of its divisors is an integer number (14874853).

Almost surely, 2^84999140 is an apocalyptic number.

It is an amenable number.

84999140 is an abundant number, since it is smaller than the sum of its proper divisors (93499096).

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

84999140 is a wasteful number, since it uses less digits than its factorization.

84999140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4249966 (or 4249964 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 84999140 is about 9219.4978171265. The cubic root of 84999140 is about 439.6814843585.

The spelling of 84999140 in words is "eighty-four million, nine hundred ninety-nine thousand, one hundred forty".