43440361 has 8 divisors (see below), whose sum is σ = 45448704. Its totient is φ = 41477280.

The previous prime is 43440323. The next prime is 43440373. The reversal of 43440361 is 16304434.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 43440361 - 2⁹ = 43439849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43440161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9345 + ... + 13198.

It is an arithmetic number, because the mean of its divisors is an integer number (5681088).

Almost surely, 2^43440361 is an apocalyptic number.

43440361 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

43440361 is a deficient number, since it is larger than the sum of its proper divisors (2008343).

43440361 is a wasteful number, since it uses less digits than its factorization.

43440361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22631.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 43440361 is about 6590.9302074897. The cubic root of 43440361 is about 351.5316844799.

Adding to 43440361 its reverse (16304434), we get a palindrome (59744795).

The spelling of 43440361 in words is "forty-three million, four hundred forty thousand, three hundred sixty-one".