84495990 has 16 divisors (see below), whose sum is σ = 202790448. Its totient is φ = 22532256.

The previous prime is 84495973. The next prime is 84495991. The reversal of 84495990 is 9959448.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84495991) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1408237 + ... + 1408296.

It is an arithmetic number, because the mean of its divisors is an integer number (12674403).

Almost surely, 2^84495990 is an apocalyptic number.

84495990 is an abundant number, since it is smaller than the sum of its proper divisors (118294458).

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

84495990 is a wasteful number, since it uses less digits than its factorization.

84495990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2816543.

The product of its (nonzero) digits is 466560, while the sum is 48.

The square root of 84495990 is about 9192.1700375918. The cubic root of 84495990 is about 438.8122061782.

The spelling of 84495990 in words is "eighty-four million, four hundred ninety-five thousand, nine hundred ninety".