44666689 has 4 divisors (see below), whose sum is σ = 45333424. Its totient is φ = 43999956.

The previous prime is 44666683. The next prime is 44666693. The reversal of 44666689 is 98666644.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 44666689 - 2⁷ = 44666561 is a prime.

It is a super-2 number, since 2×44666689² = 3990226212445442, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (44666683) 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, 333267 + ... + 333400.

It is an arithmetic number, because the mean of its divisors is an integer number (11333356).

Almost surely, 2^44666689 is an apocalyptic number.

It is an amenable number.

44666689 is a deficient number, since it is larger than the sum of its proper divisors (666735).

44666689 is an equidigital number, since it uses as much as digits as its factorization.

44666689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666734.

The product of its digits is 1492992, while the sum is 49.

The square root of 44666689 is about 6683.3142227491. The cubic root of 44666689 is about 354.8089668484.

The spelling of 44666689 in words is "forty-four million, six hundred sixty-six thousand, six hundred eighty-nine".