442913423 has 4 divisors (see below), whose sum is σ = 444082440. Its totient is φ = 441744408.

The previous prime is 442913363. The next prime is 442913441. The reversal of 442913423 is 324319244.

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

It is a cyclic number.

It is not a de Polignac number, because 442913423 - 2²⁸ = 174477967 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 442913423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442913453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 583940 + ... + 584697.

It is an arithmetic number, because the mean of its divisors is an integer number (111020610).

Almost surely, 2^442913423 is an apocalyptic number.

442913423 is a deficient number, since it is larger than the sum of its proper divisors (1169017).

442913423 is a wasteful number, since it uses less digits than its factorization.

442913423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169016.

The product of its digits is 20736, while the sum is 32.

The square root of 442913423 is about 21045.5083806498. The cubic root of 442913423 is about 762.2655291970.

The spelling of 442913423 in words is "four hundred forty-two million, nine hundred thirteen thousand, four hundred twenty-three".