442387850 has 36 divisors (see below), whose sum is σ = 832935714. Its totient is φ = 174810240.

The previous prime is 442387831. The next prime is 442387867. The reversal of 442387850 is 58783244.

It can be written as a sum of positive squares in 9 ways, for example, as 57168721 + 385219129 = 7561^2 + 19627^2 .

It is a junction number, because it is equal to n+sod(n) for n = 442387798 and 442387807.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 395492 + ... + 396608.

Almost surely, 2^442387850 is an apocalyptic number.

442387850 is a deficient number, since it is larger than the sum of its proper divisors (390547864).

442387850 is a wasteful number, since it uses less digits than its factorization.

442387850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1307 (or 1213 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 41.

The square root of 442387850 is about 21033.0180906117. The cubic root of 442387850 is about 761.9639015881.

The spelling of 442387850 in words is "four hundred forty-two million, three hundred eighty-seven thousand, eight hundred fifty".