84790089 has 24 divisors (see below), whose sum is σ = 125728200. Its totient is φ = 55041792.

The previous prime is 84790087. The next prime is 84790093. The reversal of 84790089 is 98009748.

It can be written as a sum of positive squares in 4 ways, for example, as 7209225 + 77580864 = 2685^2 + 8808^2 .

It is not a de Polignac number, because 84790089 - 2¹ = 84790087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84790081) 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 23 ways as a sum of consecutive naturals, for example, 70477 + ... + 71669.

It is an arithmetic number, because the mean of its divisors is an integer number (5238675).

Almost surely, 2^84790089 is an apocalyptic number.

It is an amenable number.

84790089 is a deficient number, since it is larger than the sum of its proper divisors (40938111).

84790089 is a wasteful number, since it uses less digits than its factorization.

84790089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401 (or 1398 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 84790089 is about 9208.1533979403. The cubic root of 84790089 is about 439.3207304684.

The spelling of 84790089 in words is "eighty-four million, seven hundred ninety thousand, eighty-nine".