84290090 has 32 divisors (see below), whose sum is σ = 154843920. Its totient is φ = 33030144.

The previous prime is 84290083. The next prime is 84290093. The reversal of 84290090 is 9009248.

It can be written as a sum of positive squares in 8 ways, for example, as 7745089 + 76545001 = 2783^2 + 8749^2 .

It is not an unprimeable number, because it can be changed into a prime (84290093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109226 + ... + 109994.

Almost surely, 2^84290090 is an apocalyptic number.

84290090 is a deficient number, since it is larger than the sum of its proper divisors (70553830).

84290090 is a wasteful number, since it uses less digits than its factorization.

84290090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 84290090 is about 9180.9634570670. The cubic root of 84290090 is about 438.4554834419.

The spelling of 84290090 in words is "eighty-four million, two hundred ninety thousand, ninety".