1140449544 has 96 divisors (see below), whose sum is σ = 3449584320. Its totient is φ = 350899776.

The previous prime is 1140449509. The next prime is 1140449551. The reversal of 1140449544 is 4459440411.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1140449499 and 1140449508.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2709 + ... + 47835.

It is an arithmetic number, because the mean of its divisors is an integer number (35933170).

Almost surely, 2^1140449544 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 1140449544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1724792160).

1140449544 is an abundant number, since it is smaller than the sum of its proper divisors (2309134776).

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

1140449544 is a wasteful number, since it uses less digits than its factorization.

1140449544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45161 (or 45145 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 1140449544 is about 33770.5425482032. The cubic root of 1140449544 is about 1044.7812226394.

Adding to 1140449544 its reverse (4459440411), we get a palindrome (5599889955).

The spelling of 1140449544 in words is "one billion, one hundred forty million, four hundred forty-nine thousand, five hundred forty-four".