1440064106 has 8 divisors (see below), whose sum is σ = 2326257444. Its totient is φ = 664644960.

The previous prime is 1440064091. The next prime is 1440064123. The reversal of 1440064106 is 6014600441.

It can be written as a sum of positive squares in 2 ways, for example, as 1439823025 + 241081 = 37945^2 + 491^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 55387081 = 1440064106 / (1 + 4 + 4 + 0 + 0 + 6 + 4 + 1 + 0 + 6).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27693515 + ... + 27693566.

Almost surely, 2^1440064106 is an apocalyptic number.

1440064106 is a deficient number, since it is larger than the sum of its proper divisors (886193338).

1440064106 is a wasteful number, since it uses less digits than its factorization.

1440064106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55387096.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 1440064106 is about 37948.1765833353. The cubic root of 1440064106 is about 1129.2599916463.

Adding to 1440064106 its reverse (6014600441), we get a palindrome (7454664547).

The spelling of 1440064106 in words is "one billion, four hundred forty million, sixty-four thousand, one hundred six".