442997755 has 8 divisors (see below), whose sum is σ = 539085024. Its totient is φ = 349406400.

The previous prime is 442997741. The next prime is 442997759. The reversal of 442997755 is 557799244.

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

It is not a de Polignac number, because 442997755 - 2¹³ = 442989563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442997759) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 623586 + ... + 624295.

It is an arithmetic number, because the mean of its divisors is an integer number (67385628).

Almost surely, 2^442997755 is an apocalyptic number.

442997755 is a deficient number, since it is larger than the sum of its proper divisors (96087269).

442997755 is a wasteful number, since it uses less digits than its factorization.

442997755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247957.

The product of its digits is 3175200, while the sum is 52.

The square root of 442997755 is about 21047.5118481972. The cubic root of 442997755 is about 762.3139053158.

The spelling of 442997755 in words is "four hundred forty-two million, nine hundred ninety-seven thousand, seven hundred fifty-five".