65039249 has 4 divisors (see below), whose sum is σ = 70951920. Its totient is φ = 59126580.

The previous prime is 65039231. The next prime is 65039267. The reversal of 65039249 is 94293056.

65039249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (65039231) and next prime (65039267).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65039249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65039269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2956319 + ... + 2956340.

It is an arithmetic number, because the mean of its divisors is an integer number (17737980).

Almost surely, 2^65039249 is an apocalyptic number.

It is an amenable number.

65039249 is a deficient number, since it is larger than the sum of its proper divisors (5912671).

65039249 is a wasteful number, since it uses less digits than its factorization.

65039249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5912670.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 65039249 is about 8064.6915006093. The cubic root of 65039249 is about 402.1534875064.

The spelling of 65039249 in words is "sixty-five million, thirty-nine thousand, two hundred forty-nine".