785948389 has 2 divisors, whose sum is σ = 785948390. Its totient is φ = 785948388.

The previous prime is 785948353. The next prime is 785948447. The reversal of 785948389 is 983849587.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 539772289 + 246176100 = 23233^2 + 15690^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-785948389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (785948309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 392974194 + 392974195.

It is an arithmetic number, because the mean of its divisors is an integer number (392974195).

Almost surely, 2^785948389 is an apocalyptic number.

It is an amenable number.

785948389 is a deficient number, since it is larger than the sum of its proper divisors (1).

785948389 is an equidigital number, since it uses as much as digits as its factorization.

785948389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17418240, while the sum is 61.

The square root of 785948389 is about 28034.7710709397. The cubic root of 785948389 is about 922.8504805367.

The spelling of 785948389 in words is "seven hundred eighty-five million, nine hundred forty-eight thousand, three hundred eighty-nine".