1423553405 has 4 divisors (see below), whose sum is σ = 1708264092. Its totient is φ = 1138842720.

The previous prime is 1423553389. The next prime is 1423553413. The reversal of 1423553405 is 5043553241.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1043225401 + 380328004 = 32299^2 + 19502^2 .

It is not a de Polignac number, because 1423553405 - 2⁴ = 1423553389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 142355336 + ... + 142355345.

It is an arithmetic number, because the mean of its divisors is an integer number (427066023).

Almost surely, 2^1423553405 is an apocalyptic number.

It is an amenable number.

1423553405 is a deficient number, since it is larger than the sum of its proper divisors (284710687).

1423553405 is an equidigital number, since it uses as much as digits as its factorization.

1423553405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284710686.

The product of its (nonzero) digits is 36000, while the sum is 32.

The square root of 1423553405 is about 37730.0066922867. The cubic root of 1423553405 is about 1124.9276411074.

The spelling of 1423553405 in words is "one billion, four hundred twenty-three million, five hundred fifty-three thousand, four hundred five".