841440 has 48 divisors (see below), whose sum is σ = 2652048. Its totient is φ = 224256.

The previous prime is 841427. The next prime is 841447. The reversal of 841440 is 44148.

841440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 841440.

It is not an unprimeable number, because it can be changed into a prime (841447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397 + ... + 1356.

It is an arithmetic number, because the mean of its divisors is an integer number (55251).

2⁸⁴¹⁴⁴⁰ is an apocalyptic number.

841440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

841440 is an abundant number, since it is smaller than the sum of its proper divisors (1810608).

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

841440 is a wasteful number, since it uses less digits than its factorization.

841440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1771 (or 1763 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 841440 is about 917.3003870053. The cubic root of 841440 is about 94.4077653288.

Adding to 841440 its reverse (44148), we get a palindrome (885588).

The spelling of 841440 in words is "eight hundred forty-one thousand, four hundred forty".