897983887 has 2 divisors, whose sum is σ = 897983888. Its totient is φ = 897983886.

The previous prime is 897983873. The next prime is 897983939. The reversal of 897983887 is 788389798.

897983887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-897983887 is a prime.

It is a super-2 number, since 2×897983887² = 1612750122623257538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (897983837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 448991943 + 448991944.

It is an arithmetic number, because the mean of its divisors is an integer number (448991944).

Almost surely, 2^897983887 is an apocalyptic number.

897983887 is a deficient number, since it is larger than the sum of its proper divisors (1).

897983887 is an equidigital number, since it uses as much as digits as its factorization.

897983887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48771072, while the sum is 67.

The square root of 897983887 is about 29966.3792774503. The cubic root of 897983887 is about 964.7679064552.

The spelling of 897983887 in words is "eight hundred ninety-seven million, nine hundred eighty-three thousand, eight hundred eighty-seven".