290872213 has 4 divisors (see below), whose sum is σ = 291283180. Its totient is φ = 290461248.

The previous prime is 290872201. The next prime is 290872247. The reversal of 290872213 is 312278092.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 179506404 + 111365809 = 13398^2 + 10553^2 .

It is a cyclic number.

It is not a de Polignac number, because 290872213 - 2⁹ = 290871701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290872013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204420 + ... + 205837.

It is an arithmetic number, because the mean of its divisors is an integer number (72820795).

Almost surely, 2^290872213 is an apocalyptic number.

It is an amenable number.

290872213 is a deficient number, since it is larger than the sum of its proper divisors (410967).

290872213 is an equidigital number, since it uses as much as digits as its factorization.

290872213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410966.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 290872213 is about 17054.9761946477. The cubic root of 290872213 is about 662.5735249121.

The spelling of 290872213 in words is "two hundred ninety million, eight hundred seventy-two thousand, two hundred thirteen".