423823249 has 2 divisors, whose sum is σ = 423823250. Its totient is φ = 423823248.

The previous prime is 423823217. The next prime is 423823261. The reversal of 423823249 is 942328324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 413837649 + 9985600 = 20343^2 + 3160^2 .

It is a cyclic number.

It is not a de Polignac number, because 423823249 - 2⁵ = 423823217 is a prime.

It is a super-2 number, since 2×423823249² = 359252292785832002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (423823349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211911624 + 211911625.

It is an arithmetic number, because the mean of its divisors is an integer number (211911625).

Almost surely, 2^423823249 is an apocalyptic number.

It is an amenable number.

423823249 is a deficient number, since it is larger than the sum of its proper divisors (1).

423823249 is an equidigital number, since it uses as much as digits as its factorization.

423823249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 37.

The square root of 423823249 is about 20586.9679409086. The cubic root of 423823249 is about 751.1527452560.

The spelling of 423823249 in words is "four hundred twenty-three million, eight hundred twenty-three thousand, two hundred forty-nine".