84890530 has 8 divisors (see below), whose sum is σ = 152802972. Its totient is φ = 33956208.

The previous prime is 84890501. The next prime is 84890549. The reversal of 84890530 is 3509848.

It can be written as a sum of positive squares in 2 ways, for example, as 80982001 + 3908529 = 8999^2 + 1977^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 84890530.

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 3 ways as a sum of consecutive naturals, for example, 4244517 + ... + 4244536.

Almost surely, 2^84890530 is an apocalyptic number.

84890530 is a deficient number, since it is larger than the sum of its proper divisors (67912442).

84890530 is a wasteful number, since it uses less digits than its factorization.

84890530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8489060.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 84890530 is about 9213.6057002674. The cubic root of 84890530 is about 439.4941328156.

It can be divided in two parts, 848 and 90530, that added together give a triangular number (91378 = T₄₂₇).

The spelling of 84890530 in words is "eighty-four million, eight hundred ninety thousand, five hundred thirty".