780850979 has 2 divisors, whose sum is σ = 780850980. Its totient is φ = 780850978.

The previous prime is 780850937. The next prime is 780851003. The reversal of 780850979 is 979058087.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 780850979 - 2²⁴ = 764073763 is a 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 780850979.

It is not a weakly prime, because it can be changed into another prime (780850079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 390425489 + 390425490.

It is an arithmetic number, because the mean of its divisors is an integer number (390425490).

Almost surely, 2^780850979 is an apocalyptic number.

780850979 is a deficient number, since it is larger than the sum of its proper divisors (1).

780850979 is an equidigital number, since it uses as much as digits as its factorization.

780850979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1270080, while the sum is 53.

The square root of 780850979 is about 27943.7109024553. The cubic root of 780850979 is about 920.8510473246.

The spelling of 780850979 in words is "seven hundred eighty million, eight hundred fifty thousand, nine hundred seventy-nine".