43421413 has 4 divisors (see below), whose sum is σ = 49624480. Its totient is φ = 37218348.

The previous prime is 43421393. The next prime is 43421429. The reversal of 43421413 is 31412434.

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 43421413 - 2⁹ = 43420901 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 (43421453) 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, 3101523 + ... + 3101536.

It is an arithmetic number, because the mean of its divisors is an integer number (12406120).

Almost surely, 2^43421413 is an apocalyptic number.

It is an amenable number.

43421413 is a deficient number, since it is larger than the sum of its proper divisors (6203067).

43421413 is an equidigital number, since it uses as much as digits as its factorization.

43421413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6203066.

The product of its digits is 1152, while the sum is 22.

The square root of 43421413 is about 6589.4926208320. The cubic root of 43421413 is about 351.4805661889.

Adding to 43421413 its reverse (31412434), we get a palindrome (74833847).

It can be divided in two parts, 43421 and 413, that added together give a palindrome (43834).

The spelling of 43421413 in words is "forty-three million, four hundred twenty-one thousand, four hundred thirteen".