5438489749 has 32 divisors (see below), whose sum is σ = 6871412736. Its totient is φ = 4181267520.

The previous prime is 5438489747. The next prime is 5438489789. The reversal of 5438489749 is 9479848345.

It is a cyclic number.

It is not a de Polignac number, because 5438489749 - 2¹ = 5438489747 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5438489747) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2281012 + ... + 2283394.

It is an arithmetic number, because the mean of its divisors is an integer number (214731648).

Almost surely, 2^5438489749 is an apocalyptic number.

It is an amenable number.

5438489749 is a deficient number, since it is larger than the sum of its proper divisors (1432922987).

5438489749 is a wasteful number, since it uses less digits than its factorization.

5438489749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2785.

The product of its digits is 34836480, while the sum is 61.

The square root of 5438489749 is about 73746.1168401428. The cubic root of 5438489749 is about 1758.5691009467.

The spelling of 5438489749 in words is "five billion, four hundred thirty-eight million, four hundred eighty-nine thousand, seven hundred forty-nine".