442442879 has 4 divisors (see below), whose sum is σ = 457699560. Its totient is φ = 427186200.

The previous prime is 442442863. The next prime is 442442939. The reversal of 442442879 is 978244244.

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 442442879 - 2⁴ = 442442863 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 (442442809) 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, 7628297 + ... + 7628354.

It is an arithmetic number, because the mean of its divisors is an integer number (114424890).

Almost surely, 2^442442879 is an apocalyptic number.

442442879 is a deficient number, since it is larger than the sum of its proper divisors (15256681).

442442879 is a wasteful number, since it uses less digits than its factorization.

442442879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15256680.

The product of its digits is 516096, while the sum is 44.

The square root of 442442879 is about 21034.3262074163. The cubic root of 442442879 is about 761.9954940569.

The spelling of 442442879 in words is "four hundred forty-two million, four hundred forty-two thousand, eight hundred seventy-nine".