854397979 has 2 divisors, whose sum is σ = 854397980. Its totient is φ = 854397978.

The previous prime is 854397977. The next prime is 854397983. The reversal of 854397979 is 979793458.

854397979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 854397979 - 2¹ = 854397977 is a prime.

Together with 854397977, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (854397977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427198989 + 427198990.

It is an arithmetic number, because the mean of its divisors is an integer number (427198990).

Almost surely, 2^854397979 is an apocalyptic number.

854397979 is a deficient number, since it is larger than the sum of its proper divisors (1).

854397979 is an equidigital number, since it uses as much as digits as its factorization.

854397979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17146080, while the sum is 61.

The square root of 854397979 is about 29230.0868797888. The cubic root of 854397979 is about 948.8991788304.

The spelling of 854397979 in words is "eight hundred fifty-four million, three hundred ninety-seven thousand, nine hundred seventy-nine".