1440041401 has 8 divisors (see below), whose sum is σ = 1488702600. Its totient is φ = 1392024960.

The previous prime is 1440041399. The next prime is 1440041453. The reversal of 1440041401 is 1041400441.

It can be written as a sum of positive squares in 4 ways, for example, as 20259001 + 1419782400 = 4501^2 + 37680^2 .

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 1440041401 - 2¹ = 1440041399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1440141401) 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 7 ways as a sum of consecutive naturals, for example, 156646 + ... + 165583.

It is an arithmetic number, because the mean of its divisors is an integer number (186087825).

Almost surely, 2^1440041401 is an apocalyptic number.

It is an amenable number.

1440041401 is a deficient number, since it is larger than the sum of its proper divisors (48661199).

1440041401 is a wasteful number, since it uses less digits than its factorization.

1440041401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322379.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1440041401 is about 37947.8774241722. The cubic root of 1440041401 is about 1129.2540567293.

Adding to 1440041401 its reverse (1041400441), we get a palindrome (2481441842).

The spelling of 1440041401 in words is "one billion, four hundred forty million, forty-one thousand, four hundred one".