913440 has 96 divisors (see below), whose sum is σ = 3157056. Its totient is φ = 220160.

The previous prime is 913433. The next prime is 913441. The reversal of 913440 is 44319.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (913441) by changing a digit.

913440 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5194 + ... + 5366.

It is an arithmetic number, because the mean of its divisors is an integer number (32886).

2⁹¹³⁴⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 913440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1578528).

913440 is an abundant number, since it is smaller than the sum of its proper divisors (2243616).

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

913440 is a wasteful number, since it uses less digits than its factorization.

913440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 913440 is about 955.7405505680. The cubic root of 913440 is about 97.0271649570.

Adding to 913440 its reverse (44319), we get a palindrome (957759).

The spelling of 913440 in words is "nine hundred thirteen thousand, four hundred forty".