1423440404 has 24 divisors (see below), whose sum is σ = 2624512800. Its totient is φ = 673647840.

The previous prime is 1423440397. The next prime is 1423440409. The reversal of 1423440404 is 4040443241.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423440409) 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, 81827 + ... + 97685.

It is an arithmetic number, because the mean of its divisors is an integer number (109354700).

Almost surely, 2^1423440404 is an apocalyptic number.

It is an amenable number.

1423440404 is a deficient number, since it is larger than the sum of its proper divisors (1201072396).

1423440404 is a wasteful number, since it uses less digits than its factorization.

1423440404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17063 (or 17061 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 1423440404 is about 37728.5091674718. The cubic root of 1423440404 is about 1124.8978749107.

Adding to 1423440404 its reverse (4040443241), we get a palindrome (5463883645).

The spelling of 1423440404 in words is "one billion, four hundred twenty-three million, four hundred forty thousand, four hundred four".