43394140 has 12 divisors (see below), whose sum is σ = 91127736. Its totient is φ = 17357648.

The previous prime is 43394137. The next prime is 43394161. The reversal of 43394140 is 4149334.

It is a junction number, because it is equal to n+sod(n) for n = 43394099 and 43394108.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1084834 + ... + 1084873.

It is an arithmetic number, because the mean of its divisors is an integer number (7593978).

Almost surely, 2^43394140 is an apocalyptic number.

It is an amenable number.

43394140 is an abundant number, since it is smaller than the sum of its proper divisors (47733596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43394140 is a wasteful number, since it uses less digits than its factorization.

43394140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2169716 (or 2169714 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 43394140 is about 6587.4228648235. The cubic root of 43394140 is about 351.4069624337.

It can be divided in two parts, 43394 and 140, that added together give a palindrome (43534).

The spelling of 43394140 in words is "forty-three million, three hundred ninety-four thousand, one hundred forty".