43414421 has 4 divisors (see below), whose sum is σ = 44911500. Its totient is φ = 41917344.

The previous prime is 43414403. The next prime is 43414429. The reversal of 43414421 is 12441434.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34975396 + 8439025 = 5914^2 + 2905^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43414421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43414429) 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, 748496 + ... + 748553.

It is an arithmetic number, because the mean of its divisors is an integer number (11227875).

Almost surely, 2^43414421 is an apocalyptic number.

It is an amenable number.

43414421 is a deficient number, since it is larger than the sum of its proper divisors (1497079).

43414421 is a wasteful number, since it uses less digits than its factorization.

43414421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497078.

The product of its digits is 1536, while the sum is 23.

The square root of 43414421 is about 6588.9620578662. The cubic root of 43414421 is about 351.4616992761.

Adding to 43414421 its reverse (12441434), we get a palindrome (55855855).

The spelling of 43414421 in words is "forty-three million, four hundred fourteen thousand, four hundred twenty-one".