43782493 has 2 divisors, whose sum is σ = 43782494. Its totient is φ = 43782492.

The previous prime is 43782481. The next prime is 43782503. The reversal of 43782493 is 39428734.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27436644 + 16345849 = 5238^2 + 4043^2 .

It is a cyclic number.

It is not a de Polignac number, because 43782493 - 2⁵ = 43782461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43782413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21891246 + 21891247.

It is an arithmetic number, because the mean of its divisors is an integer number (21891247).

Almost surely, 2^43782493 is an apocalyptic number.

It is an amenable number.

43782493 is a deficient number, since it is larger than the sum of its proper divisors (1).

43782493 is an equidigital number, since it uses as much as digits as its factorization.

43782493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 40.

The square root of 43782493 is about 6616.8340616945. The cubic root of 43782493 is about 352.4521484934.

The spelling of 43782493 in words is "forty-three million, seven hundred eighty-two thousand, four hundred ninety-three".