1404041665 has 8 divisors (see below), whose sum is σ = 1814453928. Its totient is φ = 1036830720.

The previous prime is 1404041663. The next prime is 1404041711. The reversal of 1404041665 is 5661404041.

It can be written as a sum of positive squares in 4 ways, for example, as 26666896 + 1377374769 = 5164^2 + 37113^2 .

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

It is not a de Polignac number, because 1404041665 - 2¹ = 1404041663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1404041663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10800256 + ... + 10800385.

It is an arithmetic number, because the mean of its divisors is an integer number (226806741).

Almost surely, 2^1404041665 is an apocalyptic number.

It is an amenable number.

1404041665 is a deficient number, since it is larger than the sum of its proper divisors (410412263).

1404041665 is a wasteful number, since it uses less digits than its factorization.

1404041665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21600659.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 1404041665 is about 37470.5439645597. The cubic root of 1404041665 is about 1119.7644235081.

The spelling of 1404041665 in words is "one billion, four hundred four million, forty-one thousand, six hundred sixty-five".