43400011 has 4 divisors (see below), whose sum is σ = 45286992. Its totient is φ = 41513032.

The previous prime is 43399973. The next prime is 43400051. The reversal of 43400011 is 11000434.

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

It is a cyclic number.

It is not a de Polignac number, because 43400011 - 2¹⁵ = 43367243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43399964 and 43400000.

It is not an unprimeable number, because it can be changed into a prime (43400051) 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, 943456 + ... + 943501.

It is an arithmetic number, because the mean of its divisors is an integer number (11321748).

Almost surely, 2^43400011 is an apocalyptic number.

43400011 is a deficient number, since it is larger than the sum of its proper divisors (1886981).

43400011 is a wasteful number, since it uses less digits than its factorization.

43400011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1886980.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 43400011 is about 6587.8684716682. The cubic root of 43400011 is about 351.4228095600.

Adding to 43400011 its reverse (11000434), we get a palindrome (54400445).

The spelling of 43400011 in words is "forty-three million, four hundred thousand, eleven".