43999489 has 4 divisors (see below), whose sum is σ = 44015040. Its totient is φ = 43983940.

The previous prime is 43999469. The next prime is 43999493. The reversal of 43999489 is 98499934.

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 43999489 - 2⁵ = 43999457 is a prime.

It is a super-2 number, since 2×43999489² = 3871910064522242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43999469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2197 + ... + 9634.

It is an arithmetic number, because the mean of its divisors is an integer number (11003760).

Almost surely, 2^43999489 is an apocalyptic number.

It is an amenable number.

43999489 is a deficient number, since it is larger than the sum of its proper divisors (15551).

43999489 is a wasteful number, since it uses less digits than its factorization.

43999489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15550.

The product of its digits is 2519424, while the sum is 55.

The square root of 43999489 is about 6633.2110625247. The cubic root of 43999489 is about 353.0334668546.

The spelling of 43999489 in words is "forty-three million, nine hundred ninety-nine thousand, four hundred eighty-nine".