442620899 has 8 divisors (see below), whose sum is σ = 519524448. Its totient is φ = 369135360.

The previous prime is 442620877. The next prime is 442620911. The reversal of 442620899 is 998026244.

It is a happy number.

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 442620899 - 2⁸ = 442620643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442620799) 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 7 ways as a sum of consecutive naturals, for example, 854222 + ... + 854739.

It is an arithmetic number, because the mean of its divisors is an integer number (64940556).

Almost surely, 2^442620899 is an apocalyptic number.

442620899 is a deficient number, since it is larger than the sum of its proper divisors (76903549).

442620899 is a wasteful number, since it uses less digits than its factorization.

442620899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709005.

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 442620899 is about 21038.5574362883. The cubic root of 442620899 is about 762.0976784330.

The spelling of 442620899 in words is "four hundred forty-two million, six hundred twenty thousand, eight hundred ninety-nine".