1988087 has 2 divisors, whose sum is σ = 1988088. Its totient is φ = 1988086.

The previous prime is 1988057. The next prime is 1988089. The reversal of 1988087 is 7808891.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1988087 - 2⁶ = 1988023 is a prime.

Together with 1988089, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1988089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 994043 + 994044.

It is an arithmetic number, because the mean of its divisors is an integer number (994044).

2^1988087 is an apocalyptic number.

1988087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1988087 is an equidigital number, since it uses as much as digits as its factorization.

1988087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 41.

The square root of 1988087 is about 1409.9953900634. The cubic root of 1988087 is about 125.7414493275.

The spelling of 1988087 in words is "one million, nine hundred eighty-eight thousand, eighty-seven".