432718639 has 2 divisors, whose sum is σ = 432718640. Its totient is φ = 432718638.

The previous prime is 432718621. The next prime is 432718651. The reversal of 432718639 is 936817234.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 432718639 - 2²¹ = 430621487 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 432718595 and 432718604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (432718609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 216359319 + 216359320.

It is an arithmetic number, because the mean of its divisors is an integer number (216359320).

Almost surely, 2^432718639 is an apocalyptic number.

432718639 is a deficient number, since it is larger than the sum of its proper divisors (1).

432718639 is an equidigital number, since it uses as much as digits as its factorization.

432718639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 43.

The square root of 432718639 is about 20801.8902746842. The cubic root of 432718639 is about 756.3715775304.

The spelling of 432718639 in words is "four hundred thirty-two million, seven hundred eighteen thousand, six hundred thirty-nine".