5409943920 has 240 divisors, whose sum is σ = 18882220032. Its totient is φ = 1386616320.

The previous prime is 5409943879. The next prime is 5409943921. The reversal of 5409943920 is 293499045.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5409943921) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3637417 + ... + 3638903.

Almost surely, 2^5409943920 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 5409943920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9441110016).

5409943920 is an abundant number, since it is smaller than the sum of its proper divisors (13472276112).

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

5409943920 is a wasteful number, since it uses less digits than its factorization.

5409943920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700 (or 1691 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 5409943920 is about 73552.3209694976. The cubic root of 5409943920 is about 1755.4868788198.

The spelling of 5409943920 in words is "five billion, four hundred nine million, nine hundred forty-three thousand, nine hundred twenty".