65419439 has 2 divisors, whose sum is σ = 65419440. Its totient is φ = 65419438.

The previous prime is 65419427. The next prime is 65419457. The reversal of 65419439 is 93491456.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65419439 - 2¹⁶ = 65353903 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65419396 and 65419405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65419639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32709719 + 32709720.

It is an arithmetic number, because the mean of its divisors is an integer number (32709720).

Almost surely, 2^65419439 is an apocalyptic number.

65419439 is a deficient number, since it is larger than the sum of its proper divisors (1).

65419439 is an equidigital number, since it uses as much as digits as its factorization.

65419439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 41.

The square root of 65419439 is about 8088.2284216014. The cubic root of 65419439 is about 402.9355679819.

The spelling of 65419439 in words is "sixty-five million, four hundred nineteen thousand, four hundred thirty-nine".