900870211 has 2 divisors, whose sum is σ = 900870212. Its totient is φ = 900870210.

The previous prime is 900870209. The next prime is 900870227. The reversal of 900870211 is 112078009.

It is a weak prime.

It is an emirp because it is prime and its reverse (112078009) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 900870211 - 2¹ = 900870209 is a prime.

Together with 900870209, it forms a pair of twin primes.

It is the 30015-th Hogben number.

It is a self number, because there is not a number n which added to its sum of digits gives 900870211.

It is not a weakly prime, because it can be changed into another prime (900870251) by changing a digit.

It is a nontrivial repunit in base 30014.

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 as a sum of consecutive naturals, namely, 450435105 + 450435106.

It is an arithmetic number, because the mean of its divisors is an integer number (450435106).

Almost surely, 2^900870211 is an apocalyptic number.

900870211 is a deficient number, since it is larger than the sum of its proper divisors (1).

900870211 is an equidigital number, since it uses as much as digits as its factorization.

900870211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 900870211 is about 30014.5000124940. The cubic root of 900870211 is about 965.8004619531.

The spelling of 900870211 in words is "nine hundred million, eight hundred seventy thousand, two hundred eleven".