5519949408 has 72 divisors (see below), whose sum is σ = 15723967896. Its totient is φ = 1836864000.

The previous prime is 5519949403. The next prime is 5519949437. The reversal of 5519949408 is 8049499155.

5519949408 is a `hidden beast` number, since 5 + 5 + 199 + 49 + 408 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5519949403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 157143 + ... + 189033.

It is an arithmetic number, because the mean of its divisors is an integer number (218388443).

Almost surely, 2^5519949408 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 5519949408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7861983948).

5519949408 is an abundant number, since it is smaller than the sum of its proper divisors (10204018488).

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

5519949408 is a wasteful number, since it uses less digits than its factorization.

5519949408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32508 (or 32497 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 54.

The square root of 5519949408 is about 74296.3620105318. The cubic root of 5519949408 is about 1767.3057852005.

The spelling of 5519949408 in words is "five billion, five hundred nineteen million, nine hundred forty-nine thousand, four hundred eight".