864322090 has 16 divisors (see below), whose sum is σ = 1609427880. Its totient is φ = 333807040.

The previous prime is 864322079. The next prime is 864322099. The reversal of 864322090 is 90223468.

It can be written as a sum of positive squares in 4 ways, for example, as 832726449 + 31595641 = 28857^2 + 5621^2 .

It is not an unprimeable number, because it can be changed into a prime (864322099) 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, 1489921 + ... + 1490500.

Almost surely, 2^864322090 is an apocalyptic number.

864322090 is a deficient number, since it is larger than the sum of its proper divisors (745105790).

864322090 is a wasteful number, since it uses less digits than its factorization.

864322090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2980457.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 864322090 is about 29399.3552650394. The cubic root of 864322090 is about 952.5589697189.

The spelling of 864322090 in words is "eight hundred sixty-four million, three hundred twenty-two thousand, ninety".