846430979 has 2 divisors, whose sum is σ = 846430980. Its totient is φ = 846430978.

The previous prime is 846430961. The next prime is 846431011. The reversal of 846430979 is 979034648.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-846430979 is a prime.

It is not a weakly prime, because it can be changed into another prime (846430679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 423215489 + 423215490.

It is an arithmetic number, because the mean of its divisors is an integer number (423215490).

Almost surely, 2^846430979 is an apocalyptic number.

846430979 is a deficient number, since it is larger than the sum of its proper divisors (1).

846430979 is an equidigital number, since it uses as much as digits as its factorization.

846430979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 50.

The square root of 846430979 is about 29093.4868828059. The cubic root of 846430979 is about 945.9405653622.

The spelling of 846430979 in words is "eight hundred forty-six million, four hundred thirty thousand, nine hundred seventy-nine".