854279819 has 2 divisors, whose sum is σ = 854279820. Its totient is φ = 854279818.

The previous prime is 854279809. The next prime is 854279863. The reversal of 854279819 is 918972458.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-854279819 is a prime.

It is a super-2 number, since 2×854279819² = 1459588018301345522, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (854279809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427139909 + 427139910.

It is an arithmetic number, because the mean of its divisors is an integer number (427139910).

Almost surely, 2^854279819 is an apocalyptic number.

854279819 is a deficient number, since it is larger than the sum of its proper divisors (1).

854279819 is an equidigital number, since it uses as much as digits as its factorization.

854279819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 53.

The square root of 854279819 is about 29228.0656048258. The cubic root of 854279819 is about 948.8554337612.

The spelling of 854279819 in words is "eight hundred fifty-four million, two hundred seventy-nine thousand, eight hundred nineteen".