84011887 has 2 divisors, whose sum is σ = 84011888. Its totient is φ = 84011886.

The previous prime is 84011861. The next prime is 84011947. The reversal of 84011887 is 78811048.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84011887 - 2²³ = 75623279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84011827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42005943 + 42005944.

It is an arithmetic number, because the mean of its divisors is an integer number (42005944).

Almost surely, 2^84011887 is an apocalyptic number.

84011887 is a deficient number, since it is larger than the sum of its proper divisors (1).

84011887 is an equidigital number, since it uses as much as digits as its factorization.

84011887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14336, while the sum is 37.

The square root of 84011887 is about 9165.7998559864. The cubic root of 84011887 is about 437.9725714842.

The spelling of 84011887 in words is "eighty-four million, eleven thousand, eight hundred eighty-seven".