1423405444 has 96 divisors (see below), whose sum is σ = 2874009600. Its totient is φ = 612702720.

The previous prime is 1423405441. The next prime is 1423405457. The reversal of 1423405444 is 4445043241.

It is not an unprimeable number, because it can be changed into a prime (1423405441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5412057 + ... + 5412319.

It is an arithmetic number, because the mean of its divisors is an integer number (29937600).

Almost surely, 2^1423405444 is an apocalyptic number.

It is an amenable number.

1423405444 is an abundant number, since it is smaller than the sum of its proper divisors (1450604156).

1423405444 is a wasteful number, since it uses less digits than its factorization.

1423405444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433 (or 431 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 31.

The square root of 1423405444 is about 37728.0458545099. The cubic root of 1423405444 is about 1124.8886655913. Note that the first 3 decimals are identical.

Adding to 1423405444 its reverse (4445043241), we get a palindrome (5868448685).

The spelling of 1423405444 in words is "one billion, four hundred twenty-three million, four hundred five thousand, four hundred forty-four".