442031989471 has 4 divisors (see below), whose sum is σ = 442280743072. Its totient is φ = 441783235872.

The previous prime is 442031989459. The next prime is 442031989489. The reversal of 442031989471 is 174989130244.

It is a happy number.

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 442031989471 - 2²⁷ = 441897771743 is a prime.

It is a super-3 number, since 3×442031989471³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442031989771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124374135 + ... + 124377688.

It is an arithmetic number, because the mean of its divisors is an integer number (110570185768).

Almost surely, 2^442031989471 is an apocalyptic number.

442031989471 is a deficient number, since it is larger than the sum of its proper divisors (248753601).

442031989471 is a wasteful number, since it uses less digits than its factorization.

442031989471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248753600.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 442031989471 in words is "four hundred forty-two billion, thirty-one million, nine hundred eighty-nine thousand, four hundred seventy-one".