64394459 has 2 divisors, whose sum is σ = 64394460. Its totient is φ = 64394458.

The previous prime is 64394441. The next prime is 64394479. The reversal of 64394459 is 95449346.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64394459 - 2⁸ = 64394203 is a prime.

It is not a weakly prime, because it can be changed into another prime (64394479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32197229 + 32197230.

It is an arithmetic number, because the mean of its divisors is an integer number (32197230).

Almost surely, 2^64394459 is an apocalyptic number.

64394459 is a deficient number, since it is larger than the sum of its proper divisors (1).

64394459 is an equidigital number, since it uses as much as digits as its factorization.

64394459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 44.

The square root of 64394459 is about 8024.6158163491. The cubic root of 64394459 is about 400.8201069955.

The spelling of 64394459 in words is "sixty-four million, three hundred ninety-four thousand, four hundred fifty-nine".