423907339 has 2 divisors, whose sum is σ = 423907340. Its totient is φ = 423907338.

The previous prime is 423907321. The next prime is 423907343. The reversal of 423907339 is 933709324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 423907339 - 2¹¹ = 423905291 is a prime.

It is not a weakly prime, because it can be changed into another prime (423907399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211953669 + 211953670.

It is an arithmetic number, because the mean of its divisors is an integer number (211953670).

Almost surely, 2^423907339 is an apocalyptic number.

423907339 is a deficient number, since it is larger than the sum of its proper divisors (1).

423907339 is an equidigital number, since it uses as much as digits as its factorization.

423907339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 40.

The square root of 423907339 is about 20589.0101510490. The cubic root of 423907339 is about 751.2024202542.

It can be divided in two parts, 42390 and 7339, that added together give a square (49729 = 223²).

The spelling of 423907339 in words is "four hundred twenty-three million, nine hundred seven thousand, three hundred thirty-nine".