43421593 has 4 divisors (see below), whose sum is σ = 45706960. Its totient is φ = 41136228.

The previous prime is 43421579. The next prime is 43421597. The reversal of 43421593 is 39512434.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43421593 - 2¹³ = 43413401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43421597) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1142655 + ... + 1142692.

It is an arithmetic number, because the mean of its divisors is an integer number (11426740).

Almost surely, 2^43421593 is an apocalyptic number.

It is an amenable number.

43421593 is a deficient number, since it is larger than the sum of its proper divisors (2285367).

43421593 is a wasteful number, since it uses less digits than its factorization.

43421593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2285366.

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

The square root of 43421593 is about 6589.5062789256. The cubic root of 43421593 is about 351.4810518665.

The spelling of 43421593 in words is "forty-three million, four hundred twenty-one thousand, five hundred ninety-three".