442837953 has 6 divisors (see below), whose sum is σ = 639654834. Its totient is φ = 295225296.

The previous prime is 442837939. The next prime is 442837957. The reversal of 442837953 is 359738244.

It can be written as a sum of positive squares in only one way, i.e., 371063169 + 71774784 = 19263^2 + 8472^2 .

It is not a de Polignac number, because 442837953 - 2¹⁰ = 442836929 is a prime.

It is a super-2 number, since 2×442837953² = 392210905234460418, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 442837899 and 442837908.

It is not an unprimeable number, because it can be changed into a prime (442837957) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24602100 + ... + 24602117.

It is an arithmetic number, because the mean of its divisors is an integer number (106609139).

Almost surely, 2^442837953 is an apocalyptic number.

It is an amenable number.

442837953 is a deficient number, since it is larger than the sum of its proper divisors (196816881).

442837953 is a wasteful number, since it uses less digits than its factorization.

442837953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49204223 (or 49204220 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 442837953 is about 21043.7152850917. The cubic root of 442837953 is about 762.2222314595. Note that the first 4 decimals are identical.

The spelling of 442837953 in words is "four hundred forty-two million, eight hundred thirty-seven thousand, nine hundred fifty-three".