854019997 has 2 divisors, whose sum is σ = 854019998. Its totient is φ = 854019996.

The previous prime is 854019983. The next prime is 854020039. The reversal of 854019997 is 799910458.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 801399481 + 52620516 = 28309^2 + 7254^2 .

It is a cyclic number.

It is not a de Polignac number, because 854019997 - 2²⁷ = 719802269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (854019917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427009998 + 427009999.

It is an arithmetic number, because the mean of its divisors is an integer number (427009999).

Almost surely, 2^854019997 is an apocalyptic number.

It is an amenable number.

854019997 is a deficient number, since it is larger than the sum of its proper divisors (1).

854019997 is an equidigital number, since it uses as much as digits as its factorization.

854019997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 52.

The square root of 854019997 is about 29223.6205320285. The cubic root of 854019997 is about 948.7592285488.

The spelling of 854019997 in words is "eight hundred fifty-four million, nineteen thousand, nine hundred ninety-seven".