209048894 has 4 divisors (see below), whose sum is σ = 313573344. Its totient is φ = 104524446.

The previous prime is 209048857. The next prime is 209048899. The reversal of 209048894 is 498840902.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209048899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52262222 + ... + 52262225.

It is an arithmetic number, because the mean of its divisors is an integer number (78393336).

Almost surely, 2^209048894 is an apocalyptic number.

209048894 is a deficient number, since it is larger than the sum of its proper divisors (104524450).

209048894 is a wasteful number, since it uses less digits than its factorization.

209048894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104524449.

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 209048894 is about 14458.5232302611. The cubic root of 209048894 is about 593.4934879566.

The spelling of 209048894 in words is "two hundred nine million, forty-eight thousand, eight hundred ninety-four".