84087427 has 2 divisors, whose sum is σ = 84087428. Its totient is φ = 84087426.

The previous prime is 84087401. The next prime is 84087499. The reversal of 84087427 is 72478048.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84087427 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84087427.

It is not a weakly prime, because it can be changed into another prime (84087527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42043713 + 42043714.

It is an arithmetic number, because the mean of its divisors is an integer number (42043714).

Almost surely, 2^84087427 is an apocalyptic number.

84087427 is a deficient number, since it is larger than the sum of its proper divisors (1).

84087427 is an equidigital number, since it uses as much as digits as its factorization.

84087427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100352, while the sum is 40.

The square root of 84087427 is about 9169.9196833996. The cubic root of 84087427 is about 438.1038010762.

The spelling of 84087427 in words is "eighty-four million, eighty-seven thousand, four hundred twenty-seven".