43243390 has 8 divisors (see below), whose sum is σ = 77838120. Its totient is φ = 17297352.

The previous prime is 43243367. The next prime is 43243391. The reversal of 43243390 is 9334234.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43243391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2162160 + ... + 2162179.

It is an arithmetic number, because the mean of its divisors is an integer number (9729765).

Almost surely, 2^43243390 is an apocalyptic number.

43243390 is a deficient number, since it is larger than the sum of its proper divisors (34594730).

43243390 is a wasteful number, since it uses less digits than its factorization.

43243390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4324346.

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 43243390 is about 6575.9706507861. The cubic root of 43243390 is about 350.9995643969. Note that the first 3 decimals are identical.

The spelling of 43243390 in words is "forty-three million, two hundred forty-three thousand, three hundred ninety".