442220365 has 8 divisors (see below), whose sum is σ = 530887320. Its totient is φ = 353627712.

The previous prime is 442220357. The next prime is 442220377. The reversal of 442220365 is 563022244.

It can be written as a sum of positive squares in 4 ways, for example, as 3988009 + 438232356 = 1997^2 + 20934^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 442220365 - 2³ = 442220357 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4510 + ... + 30079.

It is an arithmetic number, because the mean of its divisors is an integer number (66360915).

Almost surely, 2^442220365 is an apocalyptic number.

It is an amenable number.

442220365 is a deficient number, since it is larger than the sum of its proper divisors (88666955).

442220365 is a wasteful number, since it uses less digits than its factorization.

442220365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37151.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 442220365 is about 21029.0362356433. The cubic root of 442220365 is about 761.8677313516.

The spelling of 442220365 in words is "four hundred forty-two million, two hundred twenty thousand, three hundred sixty-five".