42844449 has 16 divisors (see below), whose sum is σ = 62074880. Its totient is φ = 26185680.

The previous prime is 42844441. The next prime is 42844463. The reversal of 42844449 is 94444824.

It is not a de Polignac number, because 42844449 - 2³ = 42844441 is a prime.

It is a super-2 number, since 2×42844449² = 3671293620227202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42844441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10357 + ... + 13890.

It is an arithmetic number, because the mean of its divisors is an integer number (3879680).

Almost surely, 2^42844449 is an apocalyptic number.

It is an amenable number.

42844449 is a deficient number, since it is larger than the sum of its proper divisors (19230431).

42844449 is a wasteful number, since it uses less digits than its factorization.

42844449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24300.

The product of its digits is 147456, while the sum is 39.

The square root of 42844449 is about 6545.5671259258. The cubic root of 42844449 is about 349.9168482739.

The spelling of 42844449 in words is "forty-two million, eight hundred forty-four thousand, four hundred forty-nine".