844347040 has 24 divisors (see below), whose sum is σ = 1994770260. Its totient is φ = 337738752.

The previous prime is 844347037. The next prime is 844347107. The reversal of 844347040 is 40743448.

It can be written as a sum of positive squares in 2 ways, for example, as 834285456 + 10061584 = 28884^2 + 3172^2 .

It is a junction number, because it is equal to n+sod(n) for n = 844346987 and 844347005.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2638425 + ... + 2638744.

Almost surely, 2^844347040 is an apocalyptic number.

844347040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

844347040 is an abundant number, since it is smaller than the sum of its proper divisors (1150423220).

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

844347040 is a wasteful number, since it uses less digits than its factorization.

844347040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5277184 (or 5277176 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 34.

The square root of 844347040 is about 29057.6502835312. The cubic root of 844347040 is about 945.1636158384.

The spelling of 844347040 in words is "eight hundred forty-four million, three hundred forty-seven thousand, forty".