1044540393 has 32 divisors (see below), whose sum is σ = 1529068800. Its totient is φ = 630339840.

The previous prime is 1044540389. The next prime is 1044540457. The reversal of 1044540393 is 3930454401.

It is not a de Polignac number, because 1044540393 - 2² = 1044540389 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1044540293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1424655 + ... + 1425387.

It is an arithmetic number, because the mean of its divisors is an integer number (47783400).

Almost surely, 2^1044540393 is an apocalyptic number.

1044540393 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1044540393 is a deficient number, since it is larger than the sum of its proper divisors (484528407).

1044540393 is a wasteful number, since it uses less digits than its factorization.

1044540393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 1044540393 is about 32319.3501326991. The cubic root of 1044540393 is about 1014.6316678198.

Adding to 1044540393 its reverse (3930454401), we get a palindrome (4974994794).

The spelling of 1044540393 in words is "one billion, forty-four million, five hundred forty thousand, three hundred ninety-three".