649203039 has 16 divisors (see below), whose sum is σ = 1012403200. Its totient is φ = 410022648.

The previous prime is 649203029. The next prime is 649203041. The reversal of 649203039 is 930302946.

It is a happy number.

649203039 is a `hidden beast` number, since 649 + 2 + 0 + 3 + 0 + 3 + 9 = 666.

It is not a de Polignac number, because 649203039 - 2¹¹ = 649200991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 649202994 and 649203012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649203029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 632239 + ... + 633264.

It is an arithmetic number, because the mean of its divisors is an integer number (63275200).

Almost surely, 2^649203039 is an apocalyptic number.

649203039 is a deficient number, since it is larger than the sum of its proper divisors (363200161).

649203039 is a wasteful number, since it uses less digits than its factorization.

649203039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265531 (or 1265525 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

The square root of 649203039 is about 25479.4630830400. The cubic root of 649203039 is about 865.8849304054.

The spelling of 649203039 in words is "six hundred forty-nine million, two hundred three thousand, thirty-nine".