847210249 has 8 divisors (see below), whose sum is σ = 899714088. Its totient is φ = 795002880.

The previous prime is 847210229. The next prime is 847210261. The reversal of 847210249 is 942012748.

It can be written as a sum of positive squares in 4 ways, for example, as 317980224 + 529230025 = 17832^2 + 23005^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 847210249 - 2⁷ = 847210121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (847210229) 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 in 7 ways as a sum of consecutive naturals, for example, 68212 + ... + 79669.

It is an arithmetic number, because the mean of its divisors is an integer number (112464261).

Almost surely, 2^847210249 is an apocalyptic number.

It is an amenable number.

847210249 is a deficient number, since it is larger than the sum of its proper divisors (52503839).

847210249 is a wasteful number, since it uses less digits than its factorization.

847210249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148235.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 847210249 is about 29106.8763181486. The cubic root of 847210249 is about 946.2307709511.

It can be divided in two parts, 8472 and 10249, that added together give a triangular number (18721 = T₁₉₃).

The spelling of 847210249 in words is "eight hundred forty-seven million, two hundred ten thousand, two hundred forty-nine".