864201290 has 16 divisors (see below), whose sum is σ = 1647066312. Its totient is φ = 325346304.

The previous prime is 864201269. The next prime is 864201313. The reversal of 864201290 is 92102468.

It can be written as a sum of positive squares in 4 ways, for example, as 844425481 + 19775809 = 29059^2 + 4447^2 .

It is an unprimeable number.

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, 2541599 + ... + 2541938.

Almost surely, 2^864201290 is an apocalyptic number.

864201290 is a deficient number, since it is larger than the sum of its proper divisors (782865022).

864201290 is a wasteful number, since it uses less digits than its factorization.

864201290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5083561.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 864201290 is about 29397.3007264272. The cubic root of 864201290 is about 952.5145902427.

The spelling of 864201290 in words is "eight hundred sixty-four million, two hundred one thousand, two hundred ninety".