211670049 has 4 divisors (see below), whose sum is σ = 282226736. Its totient is φ = 141113364.

The previous prime is 211670033. The next prime is 211670087. The reversal of 211670049 is 940076112.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 211670049 - 2⁴ = 211670033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211669998 and 211670025.

It is not an unprimeable number, because it can be changed into a prime (211670149) 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 3 ways as a sum of consecutive naturals, for example, 35278339 + ... + 35278344.

It is an arithmetic number, because the mean of its divisors is an integer number (70556684).

Almost surely, 2^211670049 is an apocalyptic number.

It is an amenable number.

211670049 is a deficient number, since it is larger than the sum of its proper divisors (70556687).

211670049 is an equidigital number, since it uses as much as digits as its factorization.

211670049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70556686.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 211670049 is about 14548.8848026232. The cubic root of 211670049 is about 595.9636940559.

The spelling of 211670049 in words is "two hundred eleven million, six hundred seventy thousand, forty-nine".