423869 has 2 divisors, whose sum is σ = 423870. Its totient is φ = 423868.

The previous prime is 423859. The next prime is 423883. The reversal of 423869 is 968324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 422500 + 1369 = 650^2 + 37^2 .

It is a cyclic number.

It is not a de Polignac number, because 423869 - 2⁴ = 423853 is a prime.

It is a super-2 number, since 2×423869² = 359329858322, which contains 22 as substring.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211934 + 211935.

It is an arithmetic number, because the mean of its divisors is an integer number (211935).

2⁴²³⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

423869 is a deficient number, since it is larger than the sum of its proper divisors (1).

423869 is an equidigital number, since it uses as much as digits as its factorization.

423869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 32.

The square root of 423869 is about 651.0522252477. The cubic root of 423869 is about 75.1179772838.

The spelling of 423869 in words is "four hundred twenty-three thousand, eight hundred sixty-nine".