64406339 has 2 divisors, whose sum is σ = 64406340. Its totient is φ = 64406338.

The previous prime is 64406299. The next prime is 64406359. The reversal of 64406339 is 93360446.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64406339 - 2¹⁶ = 64340803 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 64406299 and 64406308.

It is not a weakly prime, because it can be changed into another prime (64406359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32203169 + 32203170.

It is an arithmetic number, because the mean of its divisors is an integer number (32203170).

Almost surely, 2^64406339 is an apocalyptic number.

64406339 is a deficient number, since it is larger than the sum of its proper divisors (1).

64406339 is an equidigital number, since it uses as much as digits as its factorization.

64406339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 35.

The square root of 64406339 is about 8025.3560045645. The cubic root of 64406339 is about 400.8447543029.

The spelling of 64406339 in words is "sixty-four million, four hundred six thousand, three hundred thirty-nine".