840319077 has 32 divisors (see below), whose sum is σ = 1254055936. Its totient is φ = 497016000.

The previous prime is 840319069. The next prime is 840319087. The reversal of 840319077 is 770913048.

It is not a de Polignac number, because 840319077 - 2³ = 840319069 is a prime.

It is a super-2 number, since 2×840319077² = 1412272302340263858, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840319037) 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 31 ways as a sum of consecutive naturals, for example, 180258 + ... + 184860.

It is an arithmetic number, because the mean of its divisors is an integer number (39189248).

Almost surely, 2^840319077 is an apocalyptic number.

It is an amenable number.

840319077 is a deficient number, since it is larger than the sum of its proper divisors (413736859).

840319077 is a wasteful number, since it uses less digits than its factorization.

840319077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4801.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 840319077 is about 28988.2575709545. The cubic root of 840319077 is about 943.6582498001.

The spelling of 840319077 in words is "eight hundred forty million, three hundred nineteen thousand, seventy-seven".