442400443 has 8 divisors (see below), whose sum is σ = 446750640. Its totient is φ = 438067200.

The previous prime is 442400437. The next prime is 442400447. The reversal of 442400443 is 344004244.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 442400443 - 2¹⁷ = 442269371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442400447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51771 + ... + 59707.

It is an arithmetic number, because the mean of its divisors is an integer number (55843830).

Almost surely, 2^442400443 is an apocalyptic number.

442400443 is a deficient number, since it is larger than the sum of its proper divisors (4350197).

442400443 is a wasteful number, since it uses less digits than its factorization.

442400443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8477.

The product of its (nonzero) digits is 6144, while the sum is 25.

The square root of 442400443 is about 21033.3174511298. The cubic root of 442400443 is about 761.9711315338.

Adding to 442400443 its reverse (344004244), we get a palindrome (786404687).

The spelling of 442400443 in words is "four hundred forty-two million, four hundred thousand, four hundred forty-three".