849616420 has 24 divisors (see below), whose sum is σ = 1784745144. Its totient is φ = 339741696.

The previous prime is 849616399. The next prime is 849616423. The reversal of 849616420 is 24616948.

It can be written as a sum of positive squares in 4 ways, for example, as 365880384 + 483736036 = 19128^2 + 21994^2 .

It is a super-2 number, since 2×849616420² = 1443696122267232800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (849616423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113514 + ... + 120766.

It is an arithmetic number, because the mean of its divisors is an integer number (74364381).

Almost surely, 2^849616420 is an apocalyptic number.

It is an amenable number.

849616420 is an abundant number, since it is smaller than the sum of its proper divisors (935128724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

849616420 is a wasteful number, since it uses less digits than its factorization.

849616420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13119 (or 13117 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 849616420 is about 29148.1803891770. The cubic root of 849616420 is about 947.1257243149.

The spelling of 849616420 in words is "eight hundred forty-nine million, six hundred sixteen thousand, four hundred twenty".