649031029 has 8 divisors (see below), whose sum is σ = 652538880. Its totient is φ = 645530256.

The previous prime is 649031003. The next prime is 649031063. The reversal of 649031029 is 920130946.

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 649031029 - 2⁷ = 649030901 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 649030985 and 649031003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649031129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 373647 + ... + 375379.

It is an arithmetic number, because the mean of its divisors is an integer number (81567360).

Almost surely, 2^649031029 is an apocalyptic number.

It is an amenable number.

649031029 is a deficient number, since it is larger than the sum of its proper divisors (3507851).

649031029 is a wasteful number, since it uses less digits than its factorization.

649031029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3539.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 649031029 is about 25476.0873958306. The cubic root of 649031029 is about 865.8084499547.

The spelling of 649031029 in words is "six hundred forty-nine million, thirty-one thousand, twenty-nine".