43961489 has 8 divisors (see below), whose sum is σ = 51647232. Its totient is φ = 36890640.

The previous prime is 43961483. The next prime is 43961521. The reversal of 43961489 is 98416934.

43961489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43961489 is a prime.

It is a super-2 number, since 2×43961489² = 3865225030194242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (43961483) 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 7 ways as a sum of consecutive naturals, for example, 153569 + ... + 153854.

It is an arithmetic number, because the mean of its divisors is an integer number (6455904).

Almost surely, 2^43961489 is an apocalyptic number.

It is an amenable number.

43961489 is a deficient number, since it is larger than the sum of its proper divisors (7685743).

43961489 is a wasteful number, since it uses less digits than its factorization.

43961489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307447.

The product of its digits is 186624, while the sum is 44.

The square root of 43961489 is about 6630.3460693994. The cubic root of 43961489 is about 352.9318055557.

Subtracting 43961489 from its reverse (98416934), we obtain a palindrome (54455445).

It can be divided in two parts, 4396 and 1489, that added together give a palindrome (5885).

The spelling of 43961489 in words is "forty-three million, nine hundred sixty-one thousand, four hundred eighty-nine".