442377407 has 4 divisors (see below), whose sum is σ = 443124000. Its totient is φ = 441630816.

The previous prime is 442377359. The next prime is 442377427. The reversal of 442377407 is 704773244.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 442377407 - 2⁶ = 442377343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442377427) 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 3 ways as a sum of consecutive naturals, for example, 372407 + ... + 373592.

It is an arithmetic number, because the mean of its divisors is an integer number (110781000).

Almost surely, 2^442377407 is an apocalyptic number.

442377407 is a deficient number, since it is larger than the sum of its proper divisors (746593).

442377407 is an equidigital number, since it uses as much as digits as its factorization.

442377407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746592.

The product of its (nonzero) digits is 131712, while the sum is 38.

The square root of 442377407 is about 21032.7698366145. The cubic root of 442377407 is about 761.9579059053.

The spelling of 442377407 in words is "four hundred forty-two million, three hundred seventy-seven thousand, four hundred seven".