418997 has 2 divisors, whose sum is σ = 418998. Its totient is φ = 418996.

The previous prime is 418993. The next prime is 419047. The reversal of 418997 is 799814.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 417316 + 1681 = 646^2 + 41^2 .

It is a cyclic number.

It is not a de Polignac number, because 418997 - 2² = 418993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 418997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (418993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209498 + 209499.

It is an arithmetic number, because the mean of its divisors is an integer number (209499).

2⁴¹⁸⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

418997 is a deficient number, since it is larger than the sum of its proper divisors (1).

418997 is an equidigital number, since it uses as much as digits as its factorization.

418997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 38.

The square root of 418997 is about 647.2997759925. The cubic root of 418997 is about 74.8290625530.

The spelling of 418997 in words is "four hundred eighteen thousand, nine hundred ninety-seven".