442887039 has 18 divisors (see below), whose sum is σ = 744171480. Its totient is φ = 253078056.

The previous prime is 442887013. The next prime is 442887059. The reversal of 442887039 is 930788244.

It is not a de Polignac number, because 442887039 - 2¹⁵ = 442854271 is a prime.

It is a super-2 number, since 2×442887039² = 392297858628375042, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 442886985 and 442887003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442887059) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 501699 + ... + 502580.

It is an arithmetic number, because the mean of its divisors is an integer number (41342860).

Almost surely, 2^442887039 is an apocalyptic number.

442887039 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

442887039 is a deficient number, since it is larger than the sum of its proper divisors (301284441).

442887039 is a wasteful number, since it uses less digits than its factorization.

442887039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004299 (or 1004289 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 442887039 is about 21044.8815392247. The cubic root of 442887039 is about 762.2503930462.

The spelling of 442887039 in words is "four hundred forty-two million, eight hundred eighty-seven thousand, thirty-nine".