84089490 has 16 divisors (see below), whose sum is σ = 201814848. Its totient is φ = 22423856.

The previous prime is 84089471. The next prime is 84089507. The reversal of 84089490 is 9498048.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon 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, 1401462 + ... + 1401521.

It is an arithmetic number, because the mean of its divisors is an integer number (12613428).

Almost surely, 2^84089490 is an apocalyptic number.

84089490 is an abundant number, since it is smaller than the sum of its proper divisors (117725358).

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

84089490 is a wasteful number, since it uses less digits than its factorization.

84089490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2802993.

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 84089490 is about 9170.0321700635. The cubic root of 84089490 is about 438.1073838581.

The spelling of 84089490 in words is "eighty-four million, eighty-nine thousand, four hundred ninety".