84699427 has 2 divisors, whose sum is σ = 84699428. Its totient is φ = 84699426.

The previous prime is 84699371. The next prime is 84699437. The reversal of 84699427 is 72499648.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84699427 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (84699437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42349713 + 42349714.

It is an arithmetic number, because the mean of its divisors is an integer number (42349714).

Almost surely, 2^84699427 is an apocalyptic number.

84699427 is a deficient number, since it is larger than the sum of its proper divisors (1).

84699427 is an equidigital number, since it uses as much as digits as its factorization.

84699427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 49.

The square root of 84699427 is about 9203.2291615498. The cubic root of 84699427 is about 439.1640930557.

The spelling of 84699427 in words is "eighty-four million, six hundred ninety-nine thousand, four hundred twenty-seven".