653649039 has 12 divisors (see below), whose sum is σ = 993852600. Its totient is φ = 412830864.

The previous prime is 653649013. The next prime is 653649089. The reversal of 653649039 is 930946356.

It is a happy number.

It is not a de Polignac number, because 653649039 - 2²⁰ = 652600463 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 653648985 and 653649003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653649089) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1911084 + ... + 1911425.

It is an arithmetic number, because the mean of its divisors is an integer number (82821050).

Almost surely, 2^653649039 is an apocalyptic number.

653649039 is a deficient number, since it is larger than the sum of its proper divisors (340203561).

653649039 is a wasteful number, since it uses less digits than its factorization.

653649039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3822534 (or 3822531 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 45.

The square root of 653649039 is about 25566.5609537145. The cubic root of 653649039 is about 867.8570764097.

The spelling of 653649039 in words is "six hundred fifty-three million, six hundred forty-nine thousand, thirty-nine".