43845493 has 2 divisors, whose sum is σ = 43845494. Its totient is φ = 43845492.

The previous prime is 43845467. The next prime is 43845511. The reversal of 43845493 is 39454834.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30935844 + 12909649 = 5562^2 + 3593^2 .

It is a cyclic number.

It is not a de Polignac number, because 43845493 - 2¹³ = 43837301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43845443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21922746 + 21922747.

It is an arithmetic number, because the mean of its divisors is an integer number (21922747).

Almost surely, 2^43845493 is an apocalyptic number.

It is an amenable number.

43845493 is a deficient number, since it is larger than the sum of its proper divisors (1).

43845493 is an equidigital number, since it uses as much as digits as its factorization.

43845493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 40.

The square root of 43845493 is about 6621.5929352385. The cubic root of 43845493 is about 352.6211189508.

The spelling of 43845493 in words is "forty-three million, eight hundred forty-five thousand, four hundred ninety-three".