442784722919 has 48 divisors (see below), whose sum is σ = 582986327040. Its totient is φ = 326666416320.

The previous prime is 442784722883. The next prime is 442784722927. The reversal of 442784722919 is 919227487244.

It is not a de Polignac number, because 442784722919 - 2²⁰ = 442783674343 is a prime.

It is a super-2 number, since 2×442784722919² (a number of 24 digits) contains 22 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 (442784722819) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 57063362 + ... + 57071120.

It is an arithmetic number, because the mean of its divisors is an integer number (12145548480).

Almost surely, 2^442784722919 is an apocalyptic number.

442784722919 is a deficient number, since it is larger than the sum of its proper divisors (140201604121).

442784722919 is a wasteful number, since it uses less digits than its factorization.

442784722919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9868 (or 9849 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 59.

The spelling of 442784722919 in words is "four hundred forty-two billion, seven hundred eighty-four million, seven hundred twenty-two thousand, nine hundred nineteen".