7898287 has 2 divisors, whose sum is σ = 7898288. Its totient is φ = 7898286.

The previous prime is 7898263. The next prime is 7898291. The reversal of 7898287 is 7828987.

It is a strong prime.

It is an emirp because it is prime and its reverse (7828987) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7898287 - 2⁷ = 7898159 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7898287.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7898687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3949143 + 3949144.

It is an arithmetic number, because the mean of its divisors is an integer number (3949144).

Almost surely, 2^7898287 is an apocalyptic number.

7898287 is a deficient number, since it is larger than the sum of its proper divisors (1).

7898287 is an equidigital number, since it uses as much as digits as its factorization.

7898287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 451584, while the sum is 49.

The square root of 7898287 is about 2810.3891189656. The cubic root of 7898287 is about 199.1487738770.

The spelling of 7898287 in words is "seven million, eight hundred ninety-eight thousand, two hundred eighty-seven".