849945245 has 4 divisors (see below), whose sum is σ = 1019934300. Its totient is φ = 679956192.

The previous prime is 849945223. The next prime is 849945251. The reversal of 849945245 is 542549948.

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 658897561 + 191047684 = 25669^2 + 13822^2 .

It is a cyclic number.

It is not a de Polignac number, because 849945245 - 2⁸ = 849944989 is a prime.

It is a super-2 number, since 2×849945245² = 1444813838996220050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 849945193 and 849945202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84994520 + ... + 84994529.

It is an arithmetic number, because the mean of its divisors is an integer number (254983575).

Almost surely, 2^849945245 is an apocalyptic number.

It is an amenable number.

849945245 is a deficient number, since it is larger than the sum of its proper divisors (169989055).

849945245 is a wasteful number, since it uses less digits than its factorization.

849945245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169989054.

The product of its digits is 2073600, while the sum is 50.

The square root of 849945245 is about 29153.8204186004. The cubic root of 849945245 is about 947.2478964855.

The spelling of 849945245 in words is "eight hundred forty-nine million, nine hundred forty-five thousand, two hundred forty-five".