43422401 has 4 divisors (see below), whose sum is σ = 47369904. Its totient is φ = 39474900.

The previous prime is 43422383. The next prime is 43422427. The reversal of 43422401 is 10422434.

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 a de Polignac number, because none of the positive numbers 2^k-43422401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43422451) 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, 1973735 + ... + 1973756.

It is an arithmetic number, because the mean of its divisors is an integer number (11842476).

Almost surely, 2^43422401 is an apocalyptic number.

It is an amenable number.

43422401 is a deficient number, since it is larger than the sum of its proper divisors (3947503).

43422401 is a wasteful number, since it uses less digits than its factorization.

43422401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3947502.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 43422401 is about 6589.5675882413. The cubic root of 43422401 is about 351.4832320024.

Adding to 43422401 its reverse (10422434), we get a palindrome (53844835).

The spelling of 43422401 in words is "forty-three million, four hundred twenty-two thousand, four hundred one".