890284487 has 2 divisors, whose sum is σ = 890284488. Its totient is φ = 890284486.

The previous prime is 890284403. The next prime is 890284511. The reversal of 890284487 is 784482098.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 890284487 - 2⁸ = 890284231 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (890284687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445142243 + 445142244.

It is an arithmetic number, because the mean of its divisors is an integer number (445142244).

Almost surely, 2^890284487 is an apocalyptic number.

890284487 is a deficient number, since it is larger than the sum of its proper divisors (1).

890284487 is an equidigital number, since it uses as much as digits as its factorization.

890284487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1032192, while the sum is 50.

The square root of 890284487 is about 29837.6354123446. The cubic root of 890284487 is about 962.0026506123.

The spelling of 890284487 in words is "eight hundred ninety million, two hundred eighty-four thousand, four hundred eighty-seven".