442947898 has 8 divisors (see below), whose sum is σ = 665575092. Its totient is φ = 221089536.

The previous prime is 442947863. The next prime is 442947907. The reversal of 442947898 is 898749244.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 258341329 + 184606569 = 16073^2 + 13587^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190765 + ... + 193072.

Almost surely, 2^442947898 is an apocalyptic number.

442947898 is a deficient number, since it is larger than the sum of its proper divisors (222627194).

442947898 is a wasteful number, since it uses less digits than its factorization.

442947898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384416.

The product of its digits is 4644864, while the sum is 55.

The square root of 442947898 is about 21046.3274230921. The cubic root of 442947898 is about 762.2853061413.

The spelling of 442947898 in words is "four hundred forty-two million, nine hundred forty-seven thousand, eight hundred ninety-eight".