43421953 has 8 divisors (see below), whose sum is σ = 45779328. Its totient is φ = 41103744.

The previous prime is 43421951. The next prime is 43421969. The reversal of 43421953 is 35912434.

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 43421953 - 2¹ = 43421951 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43421951) 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, 7501 + ... + 11962.

It is an arithmetic number, because the mean of its divisors is an integer number (5722416).

Almost surely, 2^43421953 is an apocalyptic number.

It is an amenable number.

43421953 is a deficient number, since it is larger than the sum of its proper divisors (2357375).

43421953 is a wasteful number, since it uses less digits than its factorization.

43421953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19583.

The product of its digits is 12960, while the sum is 31.

The square root of 43421953 is about 6589.5335950278. The cubic root of 43421953 is about 351.4820232175.

The spelling of 43421953 in words is "forty-three million, four hundred twenty-one thousand, nine hundred fifty-three".