849238478 has 16 divisors (see below), whose sum is σ = 1462803840. Its totient is φ = 365700600.

The previous prime is 849238469. The next prime is 849238483. The reversal of 849238478 is 874832948.

It is a happy number.

It is a Curzon number.

It is a congruent number.

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, 1015418 + ... + 1016253.

It is an arithmetic number, because the mean of its divisors is an integer number (91425240).

Almost surely, 2^849238478 is an apocalyptic number.

849238478 is a deficient number, since it is larger than the sum of its proper divisors (613565362).

849238478 is a wasteful number, since it uses less digits than its factorization.

849238478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2031703.

The product of its digits is 3096576, while the sum is 53.

The square root of 849238478 is about 29141.6965532208. The cubic root of 849238478 is about 946.9852641916.

The spelling of 849238478 in words is "eight hundred forty-nine million, two hundred thirty-eight thousand, four hundred seventy-eight".