5405940 has 120 divisors (see below), whose sum is σ = 17563392. Its totient is φ = 1391040.

The previous prime is 5405923. The next prime is 5405969. The reversal of 5405940 is 495045.

It is a Harshad number since it is a multiple of its sum of digits (27).

5405940 is a modest number, since divided by 5940 gives 540 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 76105 + ... + 76175.

Almost surely, 2^5405940 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 5405940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8781696).

5405940 is an abundant number, since it is smaller than the sum of its proper divisors (12157452).

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

5405940 is a wasteful number, since it uses less digits than its factorization.

5405940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 5405940 is about 2325.0677409486. The cubic root of 5405940 is about 175.5053691103.

The spelling of 5405940 in words is "five million, four hundred five thousand, nine hundred forty".