2290987 has 2 divisors, whose sum is σ = 2290988. Its totient is φ = 2290986.

The previous prime is 2290979. The next prime is 2290991. The reversal of 2290987 is 7890922.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2290987 - 2³ = 2290979 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2290907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1145493 + 1145494.

It is an arithmetic number, because the mean of its divisors is an integer number (1145494).

2^2290987 is an apocalyptic number.

2290987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2290987 is an equidigital number, since it uses as much as digits as its factorization.

2290987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 2290987 is about 1513.6006738899. The cubic root of 2290987 is about 131.8279630547.

The spelling of 2290987 in words is "two million, two hundred ninety thousand, nine hundred eighty-seven".