43400422 has 32 divisors (see below), whose sum is σ = 74844000. Its totient is φ = 18697728.

The previous prime is 43400417. The next prime is 43400429. The reversal of 43400422 is 22400434.

It is a self number, because there is not a number n which added to its sum of digits gives 43400422.

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 15 ways as a sum of consecutive naturals, for example, 65529 + ... + 66187.

It is an arithmetic number, because the mean of its divisors is an integer number (2338875).

Almost surely, 2^43400422 is an apocalyptic number.

43400422 is a deficient number, since it is larger than the sum of its proper divisors (31443578).

43400422 is a wasteful number, since it uses less digits than its factorization.

43400422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 43400422 is about 6587.8996652955. The cubic root of 43400422 is about 351.4239188862.

Adding to 43400422 its reverse (22400434), we get a palindrome (65800856).

The spelling of 43400422 in words is "forty-three million, four hundred thousand, four hundred twenty-two".