785623393 has 2 divisors, whose sum is σ = 785623394. Its totient is φ = 785623392.

The previous prime is 785623387. The next prime is 785623411. The reversal of 785623393 is 393326587.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 472758049 + 312865344 = 21743^2 + 17688^2 .

It is an emirp because it is prime and its reverse (393326587) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-785623393 is a prime.

It is not a weakly prime, because it can be changed into another prime (785623313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 392811696 + 392811697.

It is an arithmetic number, because the mean of its divisors is an integer number (392811697).

Almost surely, 2^785623393 is an apocalyptic number.

It is an amenable number.

785623393 is a deficient number, since it is larger than the sum of its proper divisors (1).

785623393 is an equidigital number, since it uses as much as digits as its factorization.

785623393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 46.

The square root of 785623393 is about 28028.9741695981. The cubic root of 785623393 is about 922.7232609598.

The spelling of 785623393 in words is "seven hundred eighty-five million, six hundred twenty-three thousand, three hundred ninety-three".