65490039 has 20 divisors (see below), whose sum is σ = 102087216. Its totient is φ = 41760576.

The previous prime is 65490031. The next prime is 65490041. The reversal of 65490039 is 93009456.

It is not a de Polignac number, because 65490039 - 2³ = 65490031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65489985 and 65490012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65490031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 15714 + ... + 19439.

Almost surely, 2^65490039 is an apocalyptic number.

65490039 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

65490039 is a deficient number, since it is larger than the sum of its proper divisors (36597177).

65490039 is a wasteful number, since it uses less digits than its factorization.

65490039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35188 (or 35179 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 65490039 is about 8092.5916120857. The cubic root of 65490039 is about 403.0804638739.

The spelling of 65490039 in words is "sixty-five million, four hundred ninety thousand, thirty-nine".