840492688346 has 8 divisors (see below), whose sum is σ = 1301408033664. Its totient is φ = 406690010460.

The previous prime is 840492688333. The next prime is 840492688363. The reversal of 840492688346 is 643886294048.

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

It is a Harshad number since it is a multiple of its sum of digits (62), and also a Moran number because the ratio is a prime number: 13556333683 = 840492688346 / (8 + 4 + 0 + 4 + 9 + 2 + 6 + 8 + 8 + 3 + 4 + 6).

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 3 ways as a sum of consecutive naturals, for example, 6778166780 + ... + 6778166903.

It is an arithmetic number, because the mean of its divisors is an integer number (162676004208).

Almost surely, 2^840492688346 is an apocalyptic number.

840492688346 is a deficient number, since it is larger than the sum of its proper divisors (460915345318).

840492688346 is a wasteful number, since it uses less digits than its factorization.

840492688346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13556333716.

The product of its (nonzero) digits is 63700992, while the sum is 62.

The spelling of 840492688346 in words is "eight hundred forty billion, four hundred ninety-two million, six hundred eighty-eight thousand, three hundred forty-six".