1408144805 has 4 divisors (see below), whose sum is σ = 1689773772. Its totient is φ = 1126515840.

The previous prime is 1408144763. The next prime is 1408144817. The reversal of 1408144805 is 5084418041.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5084418041 = 20123 ⋅252667.

It can be written as a sum of positive squares in 2 ways, for example, as 446772769 + 961372036 = 21137^2 + 31006^2 .

It is not a de Polignac number, because 1408144805 - 2¹⁶ = 1408079269 is a prime.

It is a Duffinian number.

It is a congruent 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, 140814476 + ... + 140814485.

It is an arithmetic number, because the mean of its divisors is an integer number (422443443).

Almost surely, 2^1408144805 is an apocalyptic number.

It is an amenable number.

1408144805 is a deficient number, since it is larger than the sum of its proper divisors (281628967).

1408144805 is an equidigital number, since it uses as much as digits as its factorization.

1408144805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281628966.

The product of its (nonzero) digits is 20480, while the sum is 35.

The square root of 1408144805 is about 37525.2555620878. The cubic root of 1408144805 is about 1120.8541541747.

The spelling of 1408144805 in words is "one billion, four hundred eight million, one hundred forty-four thousand, eight hundred five".