842966649 has 24 divisors (see below), whose sum is σ = 1452733920. Its totient is φ = 481694472.

The previous prime is 842966639. The next prime is 842966687. The reversal of 842966649 is 946669248.

It is not a de Polignac number, because 842966649 - 2⁸ = 842966393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 842966595 and 842966604.

It is not an unprimeable number, because it can be changed into a prime (842966639) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 317259 + ... + 319904.

It is an arithmetic number, because the mean of its divisors is an integer number (60530580).

Almost surely, 2^842966649 is an apocalyptic number.

It is an amenable number.

842966649 is a deficient number, since it is larger than the sum of its proper divisors (609767271).

842966649 is a wasteful number, since it uses less digits than its factorization.

842966649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637186 (or 637173 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 54.

The square root of 842966649 is about 29033.8879415072. The cubic root of 842966649 is about 944.6482641593.

It can be divided in two parts, 8429 and 66649, that added together give a triangular number (75078 = T₃₈₇).

The spelling of 842966649 in words is "eight hundred forty-two million, nine hundred sixty-six thousand, six hundred forty-nine".