84299090 has 16 divisors (see below), whose sum is σ = 160664472. Its totient is φ = 31736064.

The previous prime is 84299087. The next prime is 84299093. The reversal of 84299090 is 9099248.

It is an interprime number because it is at equal distance from previous prime (84299087) and next prime (84299093).

It can be written as a sum of positive squares in 4 ways, for example, as 82391929 + 1907161 = 9077^2 + 1381^2 .

It is not an unprimeable number, because it can be changed into a prime (84299093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247769 + ... + 248108.

Almost surely, 2^84299090 is an apocalyptic number.

84299090 is a deficient number, since it is larger than the sum of its proper divisors (76365382).

84299090 is a wasteful number, since it uses less digits than its factorization.

84299090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495901.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 84299090 is about 9181.4535886209. The cubic root of 84299090 is about 438.4710881190.

The spelling of 84299090 in words is "eighty-four million, two hundred ninety-nine thousand, ninety".