423769 has 2 divisors, whose sum is σ = 423770. Its totient is φ = 423768.

The previous prime is 423763. The next prime is 423779. The reversal of 423769 is 967324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 416025 + 7744 = 645^2 + 88^2 .

It is a cyclic number.

It is not a de Polignac number, because 423769 - 2⁹ = 423257 is a prime.

It is a super-2 number, since 2×423769² = 359160330722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 423769.

It is not a weakly prime, because it can be changed into another prime (423763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211884 + 211885.

It is an arithmetic number, because the mean of its divisors is an integer number (211885).

2⁴²³⁷⁶⁹ is an apocalyptic number.

It is an amenable number.

423769 is a deficient number, since it is larger than the sum of its proper divisors (1).

423769 is an equidigital number, since it uses as much as digits as its factorization.

423769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 31.

The square root of 423769 is about 650.9754219631. The cubic root of 423769 is about 75.1120694927.

The spelling of 423769 in words is "four hundred twenty-three thousand, seven hundred sixty-nine".