840356104 has 32 divisors (see below), whose sum is σ = 1906692480. Its totient is φ = 338966784.

The previous prime is 840356093. The next prime is 840356107. The reversal of 840356104 is 401653048.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (840356107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 440412 + ... + 442315.

It is an arithmetic number, because the mean of its divisors is an integer number (59584140).

Almost surely, 2^840356104 is an apocalyptic number.

It is an amenable number.

840356104 is an abundant number, since it is smaller than the sum of its proper divisors (1066336376).

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

840356104 is a wasteful number, since it uses less digits than its factorization.

840356104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882757 (or 882753 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 840356104 is about 28988.8962190698. The cubic root of 840356104 is about 943.6721097420.

The spelling of 840356104 in words is "eight hundred forty million, three hundred fifty-six thousand, one hundred four".