43400023 has 8 divisors (see below), whose sum is σ = 43934688. Its totient is φ = 42868224.

The previous prime is 43399973. The next prime is 43400051. The reversal of 43400023 is 32000434.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43400023 - 2⁹ = 43399511 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 (43400323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48486 + ... + 49372.

It is an arithmetic number, because the mean of its divisors is an integer number (5491836).

Almost surely, 2^43400023 is an apocalyptic number.

43400023 is a deficient number, since it is larger than the sum of its proper divisors (534665).

43400023 is a wasteful number, since it uses less digits than its factorization.

43400023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1433.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 43400023 is about 6587.8693824331. The cubic root of 43400023 is about 351.4228419492.

Adding to 43400023 its reverse (32000434), we get a palindrome (75400457).

The spelling of 43400023 in words is "forty-three million, four hundred thousand, twenty-three".