442990719 has 12 divisors (see below), whose sum is σ = 673553400. Its totient is φ = 279783504.

The previous prime is 442990711. The next prime is 442990721. The reversal of 442990719 is 917099244.

It is a happy number.

It is not a de Polignac number, because 442990719 - 2³ = 442990711 is a prime.

It is a super-2 number, since 2×442990719² = 392481554240273922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442990711) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1295124 + ... + 1295465.

It is an arithmetic number, because the mean of its divisors is an integer number (56129450).

Almost surely, 2^442990719 is an apocalyptic number.

442990719 is a deficient number, since it is larger than the sum of its proper divisors (230562681).

442990719 is a wasteful number, since it uses less digits than its factorization.

442990719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2590614 (or 2590611 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 442990719 is about 21047.3447018858. The cubic root of 442990719 is about 762.3098694270.

The spelling of 442990719 in words is "four hundred forty-two million, nine hundred ninety thousand, seven hundred nineteen".