3087989 has 2 divisors, whose sum is σ = 3087990. Its totient is φ = 3087988.

The previous prime is 3087979. The next prime is 3087991. The reversal of 3087989 is 9897803.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2002225 + 1085764 = 1415^2 + 1042^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3087989 is a prime.

It is a Sophie Germain prime.

Together with 3087991, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3087979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1543994 + 1543995.

It is an arithmetic number, because the mean of its divisors is an integer number (1543995).

Almost surely, 2^3087989 is an apocalyptic number.

It is an amenable number.

3087989 is a deficient number, since it is larger than the sum of its proper divisors (1).

3087989 is an equidigital number, since it uses as much as digits as its factorization.

3087989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 3087989 is about 1757.2674810626. The cubic root of 3087989 is about 145.6214154840.

The spelling of 3087989 in words is "three million, eighty-seven thousand, nine hundred eighty-nine".