780379 has 2 divisors, whose sum is σ = 780380. Its totient is φ = 780378.

The previous prime is 780371. The next prime is 780383. The reversal of 780379 is 973087.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 780379 - 2³ = 780371 is a prime.

It is not a weakly prime, because it can be changed into another prime (780371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 390189 + 390190.

It is an arithmetic number, because the mean of its divisors is an integer number (390190).

2⁷⁸⁰³⁷⁹ is an apocalyptic number.

780379 is a deficient number, since it is larger than the sum of its proper divisors (1).

780379 is an equidigital number, since it uses as much as digits as its factorization.

780379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 780379 is about 883.3906270728. The cubic root of 780379 is about 92.0665476298.

The spelling of 780379 in words is "seven hundred eighty thousand, three hundred seventy-nine".