43400423 has 8 divisors (see below), whose sum is σ = 47414160. Its totient is φ = 39398080.

The previous prime is 43400417. The next prime is 43400429. The reversal of 43400423 is 32400434.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (43400417) and next prime (43400429).

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 43400423 - 2¹⁴ = 43384039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43400395 and 43400404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43400429) 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, 6461 + ... + 11337.

It is an arithmetic number, because the mean of its divisors is an integer number (5926770).

Almost surely, 2^43400423 is an apocalyptic number.

43400423 is a deficient number, since it is larger than the sum of its proper divisors (4013737).

43400423 is a wasteful number, since it uses less digits than its factorization.

43400423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5697.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 43400423 is about 6587.8997411922. The cubic root of 43400423 is about 351.4239215853.

Adding to 43400423 its reverse (32400434), we get a palindrome (75800857).

The spelling of 43400423 in words is "forty-three million, four hundred thousand, four hundred twenty-three".