442405263 has 32 divisors (see below), whose sum is σ = 648333504. Its totient is φ = 267190272.

The previous prime is 442405261. The next prime is 442405277. The reversal of 442405263 is 362504244.

It is not a de Polignac number, because 442405263 - 2¹ = 442405261 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 442405263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442405261) 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, 181831 + ... + 184247.

It is an arithmetic number, because the mean of its divisors is an integer number (20260422).

Almost surely, 2^442405263 is an apocalyptic number.

442405263 is a deficient number, since it is larger than the sum of its proper divisors (205928241).

442405263 is a wasteful number, since it uses less digits than its factorization.

442405263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2571.

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 442405263 is about 21033.4320309359. The cubic root of 442405263 is about 761.9738987760.

The spelling of 442405263 in words is "four hundred forty-two million, four hundred five thousand, two hundred sixty-three".