5431444540 has 24 divisors (see below), whose sum is σ = 11474340192. Its totient is φ = 2159567040.

The previous prime is 5431444523. The next prime is 5431444541. The reversal of 5431444540 is 454441345.

It is a junction number, because it is equal to n+sod(n) for n = 5431444496 and 5431444505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5431444541) 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, 809751 + ... + 816430.

It is an arithmetic number, because the mean of its divisors is an integer number (478097508).

Almost surely, 2^5431444540 is an apocalyptic number.

It is an amenable number.

5431444540 is an abundant number, since it is smaller than the sum of its proper divisors (6042895652).

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

5431444540 is a wasteful number, since it uses less digits than its factorization.

5431444540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626357 (or 1626355 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 34.

The square root of 5431444540 is about 73698.3347165999. The cubic root of 5431444540 is about 1757.8094022553.

Adding to 5431444540 its reverse (454441345), we get a palindrome (5885885885).

The spelling of 5431444540 in words is "five billion, four hundred thirty-one million, four hundred forty-four thousand, five hundred forty".