846389944979 has 2 divisors, whose sum is σ = 846389944980. Its totient is φ = 846389944978.

The previous prime is 846389944973. The next prime is 846389945147. The reversal of 846389944979 is 979449983648.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 846389944979 - 2⁴ = 846389944963 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (846389944973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 423194972489 + 423194972490.

It is an arithmetic number, because the mean of its divisors is an integer number (423194972490).

Almost surely, 2^846389944979 is an apocalyptic number.

846389944979 is a deficient number, since it is larger than the sum of its proper divisors (1).

846389944979 is an equidigital number, since it uses as much as digits as its factorization.

846389944979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3386105856, while the sum is 80.

The spelling of 846389944979 in words is "eight hundred forty-six billion, three hundred eighty-nine million, nine hundred forty-four thousand, nine hundred seventy-nine".