64349393 has 2 divisors, whose sum is σ = 64349394. Its totient is φ = 64349392.

The previous prime is 64349387. The next prime is 64349431. The reversal of 64349393 is 39394346.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45050944 + 19298449 = 6712^2 + 4393^2 .

It is a cyclic number.

It is not a de Polignac number, because 64349393 - 2⁸ = 64349137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64349393.

It is not a weakly prime, because it can be changed into another prime (64349323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32174696 + 32174697.

It is an arithmetic number, because the mean of its divisors is an integer number (32174697).

Almost surely, 2^64349393 is an apocalyptic number.

It is an amenable number.

64349393 is a deficient number, since it is larger than the sum of its proper divisors (1).

64349393 is an equidigital number, since it uses as much as digits as its factorization.

64349393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 41.

The square root of 64349393 is about 8021.8073399951. The cubic root of 64349393 is about 400.7265814826.

The spelling of 64349393 in words is "sixty-four million, three hundred forty-nine thousand, three hundred ninety-three".