442740777 has 8 divisors (see below), whose sum is σ = 615987264. Its totient is φ = 282327408.

The previous prime is 442740773. The next prime is 442740797. The reversal of 442740777 is 777047244.

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

It is not a de Polignac number, because 442740777 - 2² = 442740773 is a prime.

It is not an unprimeable number, because it can be changed into a prime (442740773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3208198 + ... + 3208335.

It is an arithmetic number, because the mean of its divisors is an integer number (76998408).

Almost surely, 2^442740777 is an apocalyptic number.

It is an amenable number.

442740777 is a deficient number, since it is larger than the sum of its proper divisors (173246487).

442740777 is a wasteful number, since it uses less digits than its factorization.

442740777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6416559.

The product of its (nonzero) digits is 307328, while the sum is 42.

The square root of 442740777 is about 21041.4062505337. The cubic root of 442740777 is about 762.1664735721.

The spelling of 442740777 in words is "four hundred forty-two million, seven hundred forty thousand, seven hundred seventy-seven".