840246890 has 16 divisors (see below), whose sum is σ = 1728508032. Its totient is φ = 288084624.

The previous prime is 840246889. The next prime is 840246919. The reversal of 840246890 is 98642048.

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 7 ways as a sum of consecutive naturals, for example, 6001694 + ... + 6001833.

It is an arithmetic number, because the mean of its divisors is an integer number (108031752).

Almost surely, 2^840246890 is an apocalyptic number.

840246890 is an abundant number, since it is smaller than the sum of its proper divisors (888261142).

840246890 is a wasteful number, since it uses less digits than its factorization.

840246890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12003541.

The product of its (nonzero) digits is 110592, while the sum is 41.

The square root of 840246890 is about 28987.0124366068. The cubic root of 840246890 is about 943.6312276008.

The spelling of 840246890 in words is "eight hundred forty million, two hundred forty-six thousand, eight hundred ninety".