840457413 has 24 divisors (see below), whose sum is σ = 1223164800. Its totient is φ = 556091424.

The previous prime is 840457369. The next prime is 840457427. The reversal of 840457413 is 314754048.

840457413 is a `hidden beast` number, since 84 + 0 + 4 + 574 + 1 + 3 = 666.

It is not a de Polignac number, because 840457413 - 2⁸ = 840457157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840457433) 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 23 ways as a sum of consecutive naturals, for example, 868656 + ... + 869622.

It is an arithmetic number, because the mean of its divisors is an integer number (50965200).

Almost surely, 2^840457413 is an apocalyptic number.

It is an amenable number.

840457413 is a deficient number, since it is larger than the sum of its proper divisors (382707387).

840457413 is a wasteful number, since it uses less digits than its factorization.

840457413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601 (or 1598 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 840457413 is about 28990.6435423569. The cubic root of 840457413 is about 943.7100296333.

The spelling of 840457413 in words is "eight hundred forty million, four hundred fifty-seven thousand, four hundred thirteen".