840090484 has 12 divisors (see below), whose sum is σ = 1504348384. Its totient is φ = 410276664.

The previous prime is 840090481. The next prime is 840090487. The reversal of 840090484 is 484090048.

It is an interprime number because it is at equal distance from previous prime (840090481) and next prime (840090487).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840090481) by changing a digit.

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, 2441952 + ... + 2442295.

Almost surely, 2^840090484 is an apocalyptic number.

It is an amenable number.

840090484 is a deficient number, since it is larger than the sum of its proper divisors (664257900).

840090484 is a wasteful number, since it uses less digits than its factorization.

840090484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4884294 (or 4884292 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 840090484 is about 28984.3144476456. The cubic root of 840090484 is about 943.5726738804.

The spelling of 840090484 in words is "eight hundred forty million, ninety thousand, four hundred eighty-four".