849870428 has 24 divisors (see below), whose sum is σ = 1624114800. Its totient is φ = 385915520.

The previous prime is 849870389. The next prime is 849870479. The reversal of 849870428 is 824078948.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36950 + ... + 55362.

It is an arithmetic number, because the mean of its divisors is an integer number (67671450).

Almost surely, 2^849870428 is an apocalyptic number.

It is an amenable number.

849870428 is a deficient number, since it is larger than the sum of its proper divisors (774244372).

849870428 is a wasteful number, since it uses less digits than its factorization.

849870428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19477 (or 19475 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 50.

The square root of 849870428 is about 29152.5372480681. The cubic root of 849870428 is about 947.2201016262.

The spelling of 849870428 in words is "eight hundred forty-nine million, eight hundred seventy thousand, four hundred twenty-eight".