442031229 has 16 divisors (see below), whose sum is σ = 693383040. Its totient is φ = 277352640.

The previous prime is 442031207. The next prime is 442031281. The reversal of 442031229 is 922130244.

It is not a de Polignac number, because 442031229 - 2⁸ = 442030973 is a prime.

It is a super-2 number, since 2×442031229² = 390783214822500882, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442031129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 481057 + ... + 481974.

It is an arithmetic number, because the mean of its divisors is an integer number (43336440).

Almost surely, 2^442031229 is an apocalyptic number.

It is an amenable number.

442031229 is a deficient number, since it is larger than the sum of its proper divisors (251351811).

442031229 is a wasteful number, since it uses less digits than its factorization.

442031229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963057 (or 963051 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 442031229 is about 21024.5387345359. The cubic root of 442031229 is about 761.7590998678.

The spelling of 442031229 in words is "four hundred forty-two million, thirty-one thousand, two hundred twenty-nine".