43339993 has 8 divisors (see below), whose sum is σ = 44512776. Its totient is φ = 42172800.

The previous prime is 43339979. The next prime is 43339997. The reversal of 43339993 is 39993334.

It can be written as a sum of positive squares in 4 ways, for example, as 345744 + 42994249 = 588^2 + 6557^2 .

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 43339993 - 2²⁵ = 9785561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43339997) 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, 17755 + ... + 20047.

It is an arithmetic number, because the mean of its divisors is an integer number (5564097).

Almost surely, 2^43339993 is an apocalyptic number.

It is an amenable number.

43339993 is a deficient number, since it is larger than the sum of its proper divisors (1172783).

43339993 is a wasteful number, since it uses less digits than its factorization.

43339993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2795.

The product of its digits is 236196, while the sum is 43.

The square root of 43339993 is about 6583.3117046058. The cubic root of 43339993 is about 351.2607402904.

The spelling of 43339993 in words is "forty-three million, three hundred thirty-nine thousand, nine hundred ninety-three".