5405440 has 72 divisors (see below), whose sum is σ = 13392288. Its totient is φ = 2088960.

The previous prime is 5405381. The next prime is 5405447. The reversal of 5405440 is 445045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5405447) 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, 52429 + ... + 52531.

It is an arithmetic number, because the mean of its divisors is an integer number (186004).

Almost surely, 2^5405440 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 5405440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6696144).

5405440 is an abundant number, since it is smaller than the sum of its proper divisors (7986848).

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

5405440 is a wasteful number, since it uses less digits than its factorization.

5405440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165 (or 151 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 5405440 is about 2324.9602147134. The cubic root of 5405440 is about 175.4999580631.

It can be divided in two parts, 54054 and 40, that multiplied together give a triangular number (2162160 = T₂₀₇₉).

The spelling of 5405440 in words is "five million, four hundred five thousand, four hundred forty".