849811442 has 16 divisors (see below), whose sum is σ = 1342384800. Its totient is φ = 402369120.

The previous prime is 849811433. The next prime is 849811477. The reversal of 849811442 is 244118948.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 849811442.

It is an unprimeable number.

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, 146534 + ... + 152222.

It is an arithmetic number, because the mean of its divisors is an integer number (83899050).

Almost surely, 2^849811442 is an apocalyptic number.

849811442 is a deficient number, since it is larger than the sum of its proper divisors (492573358).

849811442 is a wasteful number, since it uses less digits than its factorization.

849811442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9641.

The product of its digits is 73728, while the sum is 41.

The square root of 849811442 is about 29151.5255518472. The cubic root of 849811442 is about 947.1981869061.

The spelling of 849811442 in words is "eight hundred forty-nine million, eight hundred eleven thousand, four hundred forty-two".