418987 has 2 divisors, whose sum is σ = 418988. Its totient is φ = 418986.

The previous prime is 418981. The next prime is 418993. The reversal of 418987 is 789814.

It is a balanced prime because it is at equal distance from previous prime (418981) and next prime (418993).

It is a cyclic number.

It is not a de Polignac number, because 418987 - 2¹⁵ = 386219 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (418981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209493 + 209494.

It is an arithmetic number, because the mean of its divisors is an integer number (209494).

2⁴¹⁸⁹⁸⁷ is an apocalyptic number.

418987 is a deficient number, since it is larger than the sum of its proper divisors (1).

418987 is an equidigital number, since it uses as much as digits as its factorization.

418987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 37.

The square root of 418987 is about 647.2920515501. The cubic root of 418987 is about 74.8284672452.

It can be divided in two parts, 41898 and 7, that added together give a triangular number (41905 = T₂₈₉).

The spelling of 418987 in words is "four hundred eighteen thousand, nine hundred eighty-seven".