1440513 has 12 divisors (see below), whose sum is σ = 2171520. Its totient is φ = 918456.

The previous prime is 1440511. The next prime is 1440533. The reversal of 1440513 is 3150441.

It is a happy number.

It is not a de Polignac number, because 1440513 - 2¹ = 1440511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1440511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3273 + ... + 3686.

It is an arithmetic number, because the mean of its divisors is an integer number (180960).

2^1440513 is an apocalyptic number.

It is an amenable number.

1440513 is a deficient number, since it is larger than the sum of its proper divisors (731007).

1440513 is a wasteful number, since it uses less digits than its factorization.

1440513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6988 (or 6985 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1440513 is about 1200.2137309663. The cubic root of 1440513 is about 112.9377316370.

Adding to 1440513 its product of nonzero digits (240), we get a triangular number (1440753 = T₁₆₉₇).

Adding to 1440513 its reverse (3150441), we get a palindrome (4590954).

It can be divided in two parts, 1440 and 513, that multiplied together give a triangular number (738720 = T₁₂₁₅).

The spelling of 1440513 in words is "one million, four hundred forty thousand, five hundred thirteen".