42889619 has 4 divisors (see below), whose sum is σ = 43887096. Its totient is φ = 41892144.

The previous prime is 42889597. The next prime is 42889663. The reversal of 42889619 is 91698824.

42889619 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 42889619 - 2¹² = 42885523 is a prime.

It is a super-2 number, since 2×42889619² = 3679038835930322, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (42889219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 498674 + ... + 498759.

It is an arithmetic number, because the mean of its divisors is an integer number (10971774).

Almost surely, 2^42889619 is an apocalyptic number.

42889619 is a deficient number, since it is larger than the sum of its proper divisors (997477).

42889619 is an equidigital number, since it uses as much as digits as its factorization.

42889619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997476.

The product of its digits is 248832, while the sum is 47.

The square root of 42889619 is about 6549.0166437413. The cubic root of 42889619 is about 350.0397750715.

The spelling of 42889619 in words is "forty-two million, eight hundred eighty-nine thousand, six hundred nineteen".