844090740 has 48 divisors (see below), whose sum is σ = 2626061760. Its totient is φ = 225090720.

The previous prime is 844090729. The next prime is 844090763. The reversal of 844090740 is 47090448.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 844090695 and 844090704.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 781026 + ... + 782105.

It is an arithmetic number, because the mean of its divisors is an integer number (54709620).

Almost surely, 2^844090740 is an apocalyptic number.

It is an amenable number.

844090740 is an abundant number, since it is smaller than the sum of its proper divisors (1781971020).

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

844090740 is a wasteful number, since it uses less digits than its factorization.

844090740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563149 (or 1563141 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 844090740 is about 29053.2397504994. The cubic root of 844090740 is about 945.0679719312.

The spelling of 844090740 in words is "eight hundred forty-four million, ninety thousand, seven hundred forty".