84072487 has 2 divisors, whose sum is σ = 84072488. Its totient is φ = 84072486.

The previous prime is 84072431. The next prime is 84072503. The reversal of 84072487 is 78427048.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84072487 - 2¹¹ = 84070439 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84072187) 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, 42036243 + 42036244.

It is an arithmetic number, because the mean of its divisors is an integer number (42036244).

Almost surely, 2^84072487 is an apocalyptic number.

84072487 is a deficient number, since it is larger than the sum of its proper divisors (1).

84072487 is an equidigital number, since it uses as much as digits as its factorization.

84072487 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 84072487 is about 9169.1050272096. The cubic root of 84072487 is about 438.0778532474.

The spelling of 84072487 in words is "eighty-four million, seventy-two thousand, four hundred eighty-seven".