1440055213 has 8 divisors (see below), whose sum is σ = 1459180800. Its totient is φ = 1420952208.

The previous prime is 1440055189. The next prime is 1440055219. The reversal of 1440055213 is 3125500441.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1440055213 - 2⁵ = 1440055181 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 (1440055219) 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, 151248 + ... + 160486.

It is an arithmetic number, because the mean of its divisors is an integer number (182397600).

Almost surely, 2^1440055213 is an apocalyptic number.

It is an amenable number.

1440055213 is a deficient number, since it is larger than the sum of its proper divisors (19125587).

1440055213 is an equidigital number, since it uses as much as digits as its factorization.

1440055213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11291.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1440055213 is about 37948.0594101991. The cubic root of 1440055213 is about 1129.2576670901.

Adding to 1440055213 its reverse (3125500441), we get a palindrome (4565555654).

The spelling of 1440055213 in words is "one billion, four hundred forty million, fifty-five thousand, two hundred thirteen".