8209642 has 8 divisors (see below), whose sum is σ = 14073696. Its totient is φ = 3518412.

The previous prime is 8209633. The next prime is 8209681. The reversal of 8209642 is 2469028.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 293188 + ... + 293215.

It is an arithmetic number, because the mean of its divisors is an integer number (1759212).

Almost surely, 2^8209642 is an apocalyptic number.

8209642 is a deficient number, since it is larger than the sum of its proper divisors (5864054).

8209642 is a wasteful number, since it uses less digits than its factorization.

8209642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586412.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 8209642 is about 2865.2472842671. The cubic root of 8209642 is about 201.7319746895.

The spelling of 8209642 in words is "eight million, two hundred nine thousand, six hundred forty-two".