785428379 has 2 divisors, whose sum is σ = 785428380. Its totient is φ = 785428378.

The previous prime is 785428363. The next prime is 785428429. The reversal of 785428379 is 973824587.

It is a weak prime.

It is an emirp because it is prime and its reverse (973824587) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 785428379 - 2⁴ = 785428363 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 785428379.

It is not a weakly prime, because it can be changed into another prime (785428079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 392714189 + 392714190.

It is an arithmetic number, because the mean of its divisors is an integer number (392714190).

Almost surely, 2^785428379 is an apocalyptic number.

785428379 is a deficient number, since it is larger than the sum of its proper divisors (1).

785428379 is an equidigital number, since it uses as much as digits as its factorization.

785428379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3386880, while the sum is 53.

The square root of 785428379 is about 28025.4951606568. The cubic root of 785428379 is about 922.6469059502.

The spelling of 785428379 in words is "seven hundred eighty-five million, four hundred twenty-eight thousand, three hundred seventy-nine".