43009401 has 16 divisors (see below), whose sum is σ = 58298240. Its totient is φ = 28200960.

The previous prime is 43009391. The next prime is 43009403. The reversal of 43009401 is 10490034.

It is a de Polignac number, because none of the positive numbers 2^k-43009401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43009403) 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 15 ways as a sum of consecutive naturals, for example, 55545 + ... + 56313.

It is an arithmetic number, because the mean of its divisors is an integer number (3643640).

Almost surely, 2^43009401 is an apocalyptic number.

It is an amenable number.

43009401 is a deficient number, since it is larger than the sum of its proper divisors (15288839).

43009401 is a wasteful number, since it uses less digits than its factorization.

43009401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 43009401 is about 6558.1553046569. The cubic root of 43009401 is about 350.3653355311.

Adding to 43009401 its reverse (10490034), we get a palindrome (53499435).

The spelling of 43009401 in words is "forty-three million, nine thousand, four hundred one".