849742550 has 24 divisors (see below), whose sum is σ = 1631508672. Its totient is φ = 328932000.

The previous prime is 849742549. The next prime is 849742559. The reversal of 849742550 is 55247948.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (849742559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 272561 + ... + 275660.

It is an arithmetic number, because the mean of its divisors is an integer number (67979528).

Almost surely, 2^849742550 is an apocalyptic number.

849742550 is a deficient number, since it is larger than the sum of its proper divisors (781766122).

849742550 is a wasteful number, since it uses less digits than its factorization.

849742550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548264 (or 548259 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 44.

The square root of 849742550 is about 29150.3439087775. The cubic root of 849742550 is about 947.1725905845.

The spelling of 849742550 in words is "eight hundred forty-nine million, seven hundred forty-two thousand, five hundred fifty".