442867390 has 48 divisors (see below), whose sum is σ = 976136400. Its totient is φ = 143845632.

The previous prime is 442867351. The next prime is 442867423. The reversal of 442867390 is 93768244.

It is a super-2 number, since 2×442867390² = 392263050250824200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14475 + ... + 33094.

It is an arithmetic number, because the mean of its divisors is an integer number (20336175).

Almost surely, 2^442867390 is an apocalyptic number.

442867390 is an abundant number, since it is smaller than the sum of its proper divisors (533269010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

442867390 is a wasteful number, since it uses less digits than its factorization.

442867390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47609 (or 47602 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 442867390 is about 21044.4146984420. The cubic root of 442867390 is about 762.2391202850.

The spelling of 442867390 in words is "four hundred forty-two million, eight hundred sixty-seven thousand, three hundred ninety".