84691319 has 2 divisors, whose sum is σ = 84691320. Its totient is φ = 84691318.

The previous prime is 84691301. The next prime is 84691333. The reversal of 84691319 is 91319648.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84691319 - 2⁸ = 84691063 is a prime.

It is a super-2 number, since 2×84691319² = 14345239027919522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84699319) 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, 42345659 + 42345660.

It is an arithmetic number, because the mean of its divisors is an integer number (42345660).

Almost surely, 2^84691319 is an apocalyptic number.

84691319 is a deficient number, since it is larger than the sum of its proper divisors (1).

84691319 is an equidigital number, since it uses as much as digits as its factorization.

84691319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 41.

The square root of 84691319 is about 9202.7886534463. The cubic root of 84691319 is about 439.1500793596.

The spelling of 84691319 in words is "eighty-four million, six hundred ninety-one thousand, three hundred nineteen".