442607457 has 4 divisors (see below), whose sum is σ = 590143280. Its totient is φ = 295071636.

The previous prime is 442607447. The next prime is 442607513. The reversal of 442607457 is 754706244.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 442607457 - 2⁴ = 442607441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442607437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73767907 + ... + 73767912.

It is an arithmetic number, because the mean of its divisors is an integer number (147535820).

Almost surely, 2^442607457 is an apocalyptic number.

It is an amenable number.

442607457 is a deficient number, since it is larger than the sum of its proper divisors (147535823).

442607457 is a wasteful number, since it uses less digits than its factorization.

442607457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147535822.

The product of its (nonzero) digits is 188160, while the sum is 39.

The square root of 442607457 is about 21038.2379727961. The cubic root of 442607457 is about 762.0899636138.

The spelling of 442607457 in words is "four hundred forty-two million, six hundred seven thousand, four hundred fifty-seven".