65239039 has 8 divisors (see below), whose sum is σ = 66377520. Its totient is φ = 64105536.

The previous prime is 65239037. The next prime is 65239043. The reversal of 65239039 is 93093256.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65239039 - 2¹ = 65239037 is a prime.

It is a super-2 number, since 2×65239039² = 8512264419287042, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65238989 and 65239007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65239037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33147 + ... + 35059.

It is an arithmetic number, because the mean of its divisors is an integer number (8297190).

Almost surely, 2^65239039 is an apocalyptic number.

65239039 is a deficient number, since it is larger than the sum of its proper divisors (1138481).

65239039 is a wasteful number, since it uses less digits than its factorization.

65239039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2489.

The product of its (nonzero) digits is 43740, while the sum is 37.

The square root of 65239039 is about 8077.0687133390. The cubic root of 65239039 is about 402.5648499601.

The spelling of 65239039 in words is "sixty-five million, two hundred thirty-nine thousand, thirty-nine".