64241239 has 2 divisors, whose sum is σ = 64241240. Its totient is φ = 64241238.

The previous prime is 64241209. The next prime is 64241251. The reversal of 64241239 is 93214246.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64241239 - 2¹¹ = 64239191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64241239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64241209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32120619 + 32120620.

It is an arithmetic number, because the mean of its divisors is an integer number (32120620).

Almost surely, 2^64241239 is an apocalyptic number.

64241239 is a deficient number, since it is larger than the sum of its proper divisors (1).

64241239 is an equidigital number, since it uses as much as digits as its factorization.

64241239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 31.

The square root of 64241239 is about 8015.0632561446. The cubic root of 64241239 is about 400.5019510993.

The spelling of 64241239 in words is "sixty-four million, two hundred forty-one thousand, two hundred thirty-nine".