423254999 has 2 divisors, whose sum is σ = 423255000. Its totient is φ = 423254998.

The previous prime is 423254981. The next prime is 423255011. The reversal of 423254999 is 999452324.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423254999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423254929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211627499 + 211627500.

It is an arithmetic number, because the mean of its divisors is an integer number (211627500).

Almost surely, 2^423254999 is an apocalyptic number.

423254999 is a deficient number, since it is larger than the sum of its proper divisors (1).

423254999 is an equidigital number, since it uses as much as digits as its factorization.

423254999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 699840, while the sum is 47.

The square root of 423254999 is about 20573.1621050338. The cubic root of 423254999 is about 750.8168871227.

The spelling of 423254999 in words is "four hundred twenty-three million, two hundred fifty-four thousand, nine hundred ninety-nine".